Pressure measuring sheath for percutaneous nephroscope

Abstract

The pressure measuring sheath for the percutaneous nephroscope comprises a sheath tube body and a pressure measuring sensor, the pressure measuring sensor comprises a pressure measuring chip, a sensor guide wire and a pressure reader, the pressure measuring chip is arranged at one end of the outer wall of the sheath tube body, and a first through hole is formed in the end, close to the pressure measuring chip, of the wall of the sheath tube body. A second through hole is formed in the end, away from the pressure measuring chip, of the wall of the sheath tube body, the sensor guide wire is located in the sheath tube body, the first end of the sensor guide wire penetrates through the first through hole to be electrically connected with the pressure measuring chip, and the second end of the sensor guide wire penetrates through the second through hole to be electrically connected with the pressure reader. The pressure measuring chip is integrated at the tail end of the sheathing canal body, and is connected to the pressure reader through the sensor guide wire arranged in the sheathing canal body, so that the internal pressure of the renal pelvis can be detected in real time in an operation process; the stone breaking and removing efficiency in the percutaneous nephroscope operation process can be improved, the operation time is shortened, the internal pressure of the renal pelvis is controlled, and the risk of postoperative infection is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical equipment technical field, concretely relates to a pressure measuring sheath for percutaneous nephroscope. BACKGROUND

[0002] With the development of minimally invasive technology, the proportion of ureteral flexible mirror lithotripsy (retrograde intrarenal surgery, RIRS) in urinary lithotripsy surgery is higher and higher, but for large load upper urinary tract calculi, percutaneous nephrolithotomy (percutaneous nephrolithotomy, PNL) surgery time is short, and the stone clearance rate is high, and it is still the first-line treatment scheme for large load upper urinary tract calculi. At present, the proportion of microchannel PNL (mPNL) of ≤18F is gradually increased, and the microchannel can reduce trauma, but the accompanying high pressure in the renal pelvis becomes a new problem. High pressure in the renal pelvis can cause tissue laceration, perirenal hematoma, infectious complications, especially urosepsis and other complications, which endanger the health of patients. Clinical attention is more on the high pressure in the renal pelvis caused by RIRS, and the pressure measuring and controlling products are more mature, but the pressure measuring of mPNL is insufficient, and there is also a lack of mature product scheme. The present application can effectively solve the problem of pressure measurement of mPNL and fill the market gap. Therefore, how to overcome the above technical problems and defects becomes a key problem to be solved. SUMMARY

[0003] In view of the problem that the existing products are relatively immature for the pressure measurement of mPNL, the utility model provides a pressure measuring sheath for percutaneous nephroscope.

[0004] The technical scheme adopted by the utility model to solve the above technical problems is as follows:

[0005] The utility model provides a pressure measuring sheath for percutaneous nephroscope, including sheath tube body and pressure measuring sensor, the pressure measuring sensor includes pressure measuring chip, sensor guide wire and pressure interpreter, the pressure measuring chip is located in one end of the sheath tube body outer wall, the first through -hole is provided on one end of the sheath tube body wall body close to the pressure measuring chip, the second through -hole is provided on one end of the sheath tube body wall body away from the pressure measuring chip, the sensor guide wire is located in the sheath tube body, the first end of the sensor guide wire passes through the first through -hole and is electrically connected with the pressure measuring chip, the second end of the sensor guide wire passes through the second through -hole and is electrically connected with the pressure interpreter.

[0006] Optionally, it further includes a sheath tube connector, one end of the sheath tube body is provided with a sheath tube connector that can cooperate with it, and the sheath tube connector is in communication with the inside of the sheath tube body.

[0007] Optionally, a negative pressure suction channel is further included, one end of the negative pressure suction channel is communicated with the side wall of the sheath connector, and the other end of the negative pressure suction channel is connected with a negative pressure suction device.

[0008] Optionally, the second through hole is further arranged on the side of the sheath connector away from the negative pressure suction channel.

[0009] Optionally, a negative pressure adjusting mechanism is arranged on the negative pressure suction channel, and the negative pressure adjusting mechanism is used for adjusting the negative pressure in the negative pressure suction channel.

[0010] Optionally, the negative pressure adjusting mechanism includes a pressure relief slider and a pressure relief slide channel, a strip-shaped through hole is arranged on the negative pressure suction channel, the strip-shaped through hole forms the pressure relief slide channel, the pressure relief slider is arranged in the pressure relief slide channel and is used for adjusting the negative pressure in the negative pressure suction channel.

[0011] Optionally, the pressure relief slider includes a slider body and a cover plate, the cover plate is arranged on the outside of the negative pressure suction channel, the pressure relief slider is arranged on the side of the cover plate close to the negative pressure suction channel and extends along the direction perpendicular to the cover plate, the slider is embedded in the pressure relief slide channel and slides in the pressure relief slide channel, and the cover plate shields the pressure relief slide channel.

[0012] Optionally, a sheath handle is further included, the sheath handle includes a plurality of handle bodies and a connecting piece, the connecting piece is sleeved on the outside of the sheath body and is connected with one end of the sheath connector, and the other end of the connecting piece is connected with the plurality of handle bodies.

[0013] Optionally, a sealing assembly is further included, the sealing assembly includes a connecting rope and a sealing cap, one end of the connecting rope is arranged on the outer wall of the sheath connector, the other end of the connecting rope is connected with one end of the sealing cap, and the sealing cap is used for sealing the opening end of the sheath connector away from the sheath body.

[0014] Optionally, a dilating tube assembly is further included, the dilating tube assembly includes a dilating tube body and a dilating tube connector, one end of the dilating tube body is connected with the dilating tube connector, the other end of the dilating tube body sequentially penetrates the sheath connector, the sheath body and extends to the outside of the sheath body, and the end of the dilating tube connector close to the dilating tube body abuts against the end of the sheath connector.

[0015] The pressure measuring sheath for percutaneous nephroscopy has the advantages that the pressure measuring chip is integrated at the tail end of the sheath tube body, the sensor guide wire built in the sheath tube body is connected to the pressure interpreter, the renal pelvis internal pressure can be detected in real time during the operation process, the lithotripsy and stone extraction efficiency during the percutaneous nephroscopy operation process is improved, the operation time is shortened, the renal pelvis internal pressure is controlled, and the risk of postoperative infection is reduced, the sensor guide wire is arranged on the inner side of the sheath tube body compared with being arranged on the outer side of the sheath tube body, on one hand, the volume of the pressure measuring sheath is not increased, and on the other hand, the sensor guide wire does not contact the patient's body during the operation process, the wound infection is not caused easily, and the risk of postoperative infection is reduced, and on the other hand, the sensor guide wire is arranged on the inner side of the sheath tube body, and the operation and use are convenient. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings to be used in the description of the embodiments of the present application. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained according to these drawings without creative labor for those skilled in the art.

[0017] Figure 1 is a structure schematic view of the pressure measuring sheath for percutaneous nephroscopy provided by an embodiment of the present application;

[0018] Figure 2 is an exploded structure schematic view of the pressure measuring sheath for percutaneous nephroscopy provided by an embodiment of the present application;

[0019] Figure 3 is a partial sectional view schematic view of the pressure measuring sheath for percutaneous nephroscopy provided by an embodiment of the present application;

[0020] Figure 4 is Figure 2 a partial enlarged view of A in the above figure;

[0021] The reference signs in the drawings of the specification are as follows:

[0022] 1-sheath tube body; 11-guide wire channel; 12-first through hole; 13-second through hole; 2-pressure measuring sensor; 21-pressure measuring chip; 22-sensor guide wire; 23-pressure interpreter; 3-sheath tube joint; 31-negative pressure suction channel; 32-negative pressure adjusting mechanism; 321-pressure relief sliding block; 3211-sliding block body; 3212-cover plate; 322-pressure relief slide; 33-sheath tube handle; 331-handle body; 332-connector; 34-sealing assembly; 341-connecting rope; 342-sealing cap; 4-dilating tube; 41-dilating tube body; 42-dilating tube joint. DETAILED DESCRIPTION

[0023] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0024] In the description of this utility model, it should be understood that the terms "longitudinal," "radial," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] like Figures 1-3 As shown, in one embodiment, a pressure-measuring sheath for percutaneous nephroscopy includes a sheath body 1 and a pressure sensor 2. The pressure sensor 2 includes a pressure-measuring chip 21, a sensor guide wire 22, and a pressure interpreter 23. The pressure-measuring chip 21 is disposed at one end of the outer wall of the sheath body 1. A first through hole 12 is provided on the wall of the sheath body 1 near the pressure-measuring chip 21, and a second through hole 13 is provided on the wall of the sheath body 1 away from the pressure-measuring chip 21. The sensor guide wire 22 is located inside the sheath body 1. The first end of the sensor guide wire 22 passes through the first through hole 12 and is electrically connected to the pressure-measuring chip 21, and the second end of the sensor guide wire 22 passes through the second through hole 13 and is electrically connected to the pressure interpreter 23.

[0027] Specifically, this application integrates a pressure measuring chip 21 at the end of the sheath body 1, which is connected to the pressure interpreter 23 through a sensor guide wire 22 built into the sheath body 1. This allows for real-time monitoring of intrarenal pelvic pressure during surgery, improving the efficiency of lithotripsy and stone removal during percutaneous nephrolithotomy, shortening the operation time, controlling intrarenal pelvic pressure, and reducing the risk of postoperative infection.

[0028] Further, compared with arranging the sensor guide wire 22 outside the sheath body 1, the present application arranges the sensor guide wire 22 inside the sheath body 1, on the one hand, without increasing the volume of the pressure measuring sheath, and in the surgical process, the sensor guide wire 22 does not contact the patient's body, and is not easy to cause wound infection, reducing the risk of postoperative infection; on the other hand, arranging the sensor guide wire 22 inside the sheath body 1 is convenient to operate and use.

[0029] In some embodiments, the inner wall of the sheath body 1 is provided with a guide wire channel 11, the guide wire channel 11 is a strip-shaped groove, the sensor guide wire 22 is clamped in the guide wire channel 11, the guide wire channel 11 fixes the sensor guide wire 22, the sheath body 1 is a hollow structure, and in the use process, the dilating tube 4 or the puncture needle can be placed in the sheath body 1. Since the sensor guide wire 22 is clamped in the guide wire channel 11, the sensor guide wire 22 does not contact the dilating tube 4 or the puncture needle, and does not affect the use of the dilating tube 4 or the puncture needle, thereby improving the use range of the pressure measuring sheath, making it convenient to operate and use.

[0030] The two ends of the guide wire channel 11 are respectively communicated with the first through hole 12 and the second through hole 13, the first end of the sensor guide wire 22 is electrically connected with the pressure measuring chip 21, and the second end of the sensor guide wire 22 is sequentially communicated with the pressure measuring chip 21 through the first through hole 12, the guide wire channel 11 and the second through hole 13.

[0031] As shown in the drawings, Figures 1-2 In an embodiment, the sheath connector 3 is further included, one end of the sheath body 1 is provided with the sheath connector 3 which can cooperate with the sheath body 1, and the sheath connector 3 is communicated with the inside of the sheath body 1.

[0032] Specifically, the sheath connector 3 has multiple specifications, and the sheath connector 3 can be connected with a negative pressure aspirator, a negative pressure adjusting component and the like, thereby improving the use range of the pressure measuring sheath, making it convenient to operate and use.

[0033] As shown in the drawings, Figures 1-2 In an embodiment, the negative pressure suction channel 31 is further included, one end of the negative pressure suction channel 31 is communicated with the side wall of the sheath connector 3, and the other end of the negative pressure suction channel 31 is connected with the negative pressure aspirator.

[0034] The negative pressure suction channel 31 is connected with the negative pressure aspirator, so that the stones in the surgical process can be sucked out, the stone removal efficiency is improved, the operation time is shortened, the pressure in the renal pelvis is controlled, and the risk of postoperative infection is reduced.

[0035] Further, the negative pressure suction channel 31 is arranged on the side wall of the sheath connector 3 in an inclined manner, which is convenient for connecting the negative pressure aspirator on the negative pressure suction channel 31, and is convenient to operate and use.

[0036] As shown in the drawings, Figures 1-2As shown in the drawings, in an embodiment, the second through hole 13 can also be arranged on the sheath connector 3 away from the negative pressure suction channel 31.

[0037] Specifically, the second through hole 13 is arranged on the sheath connector 3, so as to increase the distance between the second through hole 13 and the first through hole 12, avoid the sensor guide wire 22 being too close to the patient, and improve the safety performance.

[0038] As shown in the drawings, Figure 1 , Figure 2 and Figure 4 , in an embodiment, the negative pressure suction channel 31 is provided with a negative pressure adjusting mechanism 32, and the negative pressure adjusting mechanism 32 is used to adjust the negative pressure in the negative pressure suction channel 31.

[0039] The negative pressure adjusting mechanism 32 can flexibly control the pressure entering the negative pressure suction channel 31 according to the data measured by the pressure sensor 2.

[0040] As shown in the drawings, Figure 4 , in an embodiment, the negative pressure adjusting mechanism 32 includes a pressure relief sliding block 321 and a pressure relief sliding channel 322, the negative pressure suction channel 31 is provided with a strip-shaped through hole, the strip-shaped through hole forms the pressure relief sliding channel 322, the pressure relief sliding block 321 slides in the pressure relief sliding channel 322, and is used to adjust the negative pressure in the negative pressure suction channel 31.

[0041] Specifically, the pressure relief sliding block 321 slides in the pressure relief sliding channel 322, so as to partially or completely block the pressure relief sliding channel 322, thereby changing the flow of negative pressure in the negative pressure suction channel 31 and adjusting the negative pressure in the negative pressure suction channel 31.

[0042] As shown in the drawings, Figure 4 , in an embodiment, the pressure relief sliding block 321 includes a sliding block body 3211 and a cover plate 3212, the cover plate 3212 is arranged outside the negative pressure suction channel 31, the pressure relief sliding block 321 is arranged on the side of the cover plate 3212 close to the negative pressure suction channel 31 and extends along the direction perpendicular to the cover plate 3212, the sliding block is embedded in the pressure relief sliding channel 322 and slides in the pressure relief sliding channel 322, and the cover plate 3212 blocks the pressure relief sliding channel 322.

[0043] Specifically, the sliding block body 3211 is detachably connected with the pressure relief sliding channel 322, and the sliding block body 3211 can reciprocate in the pressure relief sliding channel 322, so as to drive the cover plate 3212 to move above the pressure relief sliding channel 322, thereby partially or completely blocking the pressure relief sliding channel 322, changing the flow of negative pressure in the negative pressure suction channel 31, and adjusting the negative pressure in the negative pressure suction channel 31.

[0044] As shown in the drawings, Figures 1-2As shown in the drawings, in an embodiment, the sheath further comprises a sheath handle 33, the sheath handle 33 comprises a plurality of handle bodies 331 and a connecting piece 332, the connecting piece 332 is sleeved on the outside of the sheath body 1 and connected with one end of the sheath joint 3, and the other end of the connecting piece 332 is connected with the plurality of handle bodies 331.

[0045] Specifically, the handle bodies 331 are provided in two, the two handle bodies 331 are connected with the end of the connecting piece 332 in a Y shape, after the operation is completed, the connecting piece 332 is separated from the sheath body 1 and the sheath joint 3 by pulling the two handle bodies 331, so that the sheath body 1 is removed from the patient's body.

[0046] As shown in the drawings, Figures 1-2 In an embodiment, the sheath further comprises a sealing assembly 34, the sealing assembly 34 comprises a connecting rope 341 and a sealing cap 342, one end of the connecting rope 341 is arranged around the outer wall of the sheath joint 3, the other end of the connecting rope 341 is connected with one end of the sealing cap 342, and the sealing cap 342 is used for sealing the opening end of the sheath joint 3 away from the sheath body 1.

[0047] Specifically, the sealing cap 342 is provided with a handle on the side away from the connecting rope 341, and the surface of the handle is rough, so that the sealing cap 342 is conveniently covered and separated from the sheath joint 3 through the handle.

[0048] As shown in the drawings, Figures 1-2 In an embodiment, the sheath further comprises a dilating tube 4, the dilating tube 4 comprises a dilating tube body 41 and a dilating tube joint 42, one end of the dilating tube body 41 is connected with the dilating tube joint 42, the other end of the dilating tube body 41 penetrates the sheath joint 3, the sheath body 1 in sequence and extends to the outside of the sheath body 1, and the end of the dilating tube joint 42 close to the dilating tube body 41 abuts against the end of the sheath joint 3.

[0049] Specifically, the dilating tube 4 is a hollow structure, the end of the dilating tube body 41 away from the dilating tube joint 42 is a triangular structure, and the end of the dilating tube 4 in contact with the patient's body has a smaller aperture, since it is difficult for the sheath body 1 to enter the human body, it is more convenient to dilate the urethra of the patient by using the dilating tube 4, and further, the dilating tube 4 is detachably connected with the sheath body 1, so that the two are conveniently used together.

[0050] The above only describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A pressure measuring sheath for percutaneous nephroscopy, characterized by: The pressure measuring sensor includes a pressure measuring chip, a sensor guide wire and a pressure interpreter, the pressure measuring chip is arranged at one end of the outer wall of the sheath body, a first through hole is arranged on the wall of the sheath body near the pressure measuring chip, a second through hole is arranged on the wall of the sheath body away from the pressure measuring chip, the sensor guide wire is located in the sheath body, the first end of the sensor guide wire is electrically connected with the pressure measuring chip through the first through hole, and the second end of the sensor guide wire is electrically connected with the pressure interpreter through the second through hole.

2. The pressure measuring sheath for percutaneous nephroscopy according to claim 1, characterized by: The sheath connector is further arranged at one end of the sheath body, the sheath connector is matched with the sheath body, and the sheath connector is communicated with the inside of the sheath body.

3. The pressure measuring sheath for percutaneous nephroscopy according to claim 2, characterized in that: The negative pressure suction channel is further arranged, one end of the negative pressure suction channel is communicated with the side wall of the sheath connector, and the other end of the negative pressure suction channel is connected with a negative pressure aspirator.

4. The pressure measuring sheath for percutaneous nephroscopy according to claim 3, characterized in that: The second through hole can be arranged on the side of the sheath connector away from the negative pressure suction channel.

5. The pressure measuring sheath for percutaneous nephroscopy according to claim 3, characterized in that: The negative pressure adjusting mechanism is arranged on the negative pressure suction channel, and is used for adjusting the negative pressure in the negative pressure suction channel.

6. The pressure measuring sheath for percutaneous nephroscopy according to claim 5, characterized in that: The negative pressure adjusting mechanism includes a pressure relief slider and a pressure relief slide, a strip-shaped through hole is arranged on the negative pressure suction channel, the strip-shaped through hole forms the pressure relief slide, the pressure relief slider slides in the pressure relief slide, and the negative pressure in the negative pressure suction channel is adjusted.

7. The pressure measuring sheath for percutaneous nephroscopy according to claim 6, characterized in that: The pressure relief slider includes a slider body and a cover plate, the cover plate is arranged on the outside of the negative pressure suction channel, the pressure relief slider is arranged on the side of the cover plate close to the negative pressure suction channel and extends along the direction perpendicular to the cover plate, the slider is embedded in the pressure relief slide and slides in the pressure relief slide, and the cover plate shields the pressure relief slide.

8. The pressure measuring sheath for percutaneous nephroscopy according to claim 2, characterized by: The sheath handle further includes a plurality of handle bodies and a connecting piece, the connecting piece is sleeved on the outside of the sheath body and connected with one end of the sheath connector, and the other end of the connecting piece is connected with the plurality of handle bodies.

9. The pressure measuring sheath for percutaneous nephroscopy according to claim 2, characterized by: The sealing assembly includes a connecting rope and a sealing cap, one end of the connecting rope is arranged around the outer wall of the sheath connector, the other end of the connecting rope is connected with one end of the sealing cap, and the sealing cap is used for sealing the opening end of the sheath connector away from the sheath body.

10. The pressure measuring sheath for percutaneous nephroscopy according to claim 2, characterized in that: The expansion tube assembly includes an expansion tube and an expansion tube connector, one end of the expansion tube is connected with the expansion tube connector, the other end of the expansion tube sequentially penetrates the sheath connector, the sheath body and extends to the outside of the sheath body, and the end of the expansion tube connector close to the expansion tube is abutted with the end of the sheath connector.

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