CN217014208U

CN217014208U - Fiber ureteroscope guide sheath and guide system

Info

Publication number: CN217014208U
Application number: CN202120631797.0U
Authority: CN
Inventors: 李钧; 唐磊; 赵方舟; 宁晨
Original assignee: Beijing Friendship Hospital
Current assignee: Beijing Friendship Hospital
Priority date: 2021-03-29
Filing date: 2021-03-29
Publication date: 2022-07-22
Anticipated expiration: 2031-03-29

Abstract

The application provides a fiber ureteroscope guide sheath (1), includes: an elongated main body (11) that can be placed over the fiberureteroscope (2); a first pressure sensor (12) disposed on an outer surface of the body (11), the first pressure sensor (12) being adapted to measure a pressure generated between the body (11) and an inner wall of the ureter. In addition, the application also provides a fiber ureteroscope guide system (3). The application provides a fibre ureteroscope guide sheath and bootstrap system can avoid causing the condition that the guide sheath tears the ureter to take place because of the ureter diameter is too narrow, reduce operation complication, can also help the art person to monitor the perfusate temperature through the renal pelvis backward flow (thereby indirectly acquire the renal pelvis temperature), the art person can be according to finding the temperature adjustment rubble frequency and the perfusate velocity of flow, keep the low temperature environment in the renal pelvis, avoid the urinary system damage that the high fever brought, increase the operation security.

Description

Fiber ureteroscope guide sheath and guide system

Technical Field

The utility model relates to the field of medical instruments, in particular to a fiber ureteroscope guide sheath and a guide system for ureteroscope laser lithotripsy in urology surgery.

Background

Ureteroscope laser lithotripsy is a globally popular urinary surgery at present, is rapidly developed based on a visualization technology and an endoscope technology, is widely applied clinically on the basis of the visualization technology and has the advantages of small wound surface, less bleeding, rapid postoperative recovery, less complications and the like.

The working principle of ureteroscope laser lithotripsy is that an operator puts a fiber ureteroscope guide sheath into a pre-expanded ureter-renal pelvis system under the guide of a guide wire, and operates an electronic ureteroscope in the ureteroscope guide sheath to probe and lithotripize the ureter and the renal pelvis. However, due to individual differences of anatomical structures of patients, the diameter of the ureter guide sheath may be too large relative to the ureter, and in such a case, when the ureter guide sheath is forcibly inserted, the ureter is damaged to different degrees due to large lumen pressure, and even perforation and tearing-off of the ureter are serious, so that the ureter is narrow after operation. In addition, the heat generated by the laser during the operation causes the temperature of the perfusate in the renal pelvis to rise higher, and if the operator cannot accurately judge the temperature in the renal pelvis system and adjust the flow rate of the perfusate, the urinary system may be damaged. Furthermore, poor control of the perfusion fluid during the operation may increase the internal pressure of the renal pelvis, resulting in high renal pelvis pressure and increased incidence of complications such as postoperative infection

SUMMERY OF THE UTILITY MODEL

In view of the problems in the background art, the present invention provides a fiber ureteroscope guide sheath, comprising:

an elongated main body capable of being sleeved on a fiber ureteroscope;

a first pressure sensor disposed on an outer surface of the body, the first pressure sensor for measuring a pressure generated between the body and an inner wall of the ureter.

In some embodiments of the utility model, the fiberureteroscope guide sheath comprises: a temperature sensor disposed on an inner surface of the body, the temperature sensor for measuring a temperature of perfusion fluid that has refluxed through the renal pelvis.

In some embodiments of the utility model, the fiberureteroscope guide sheath comprises: the U-shaped clamp is arranged at the front end of the main body; the first pressure sensor and the temperature sensor are secured by the clevis in opposition on the inner and outer surfaces of the body.

In some embodiments of the utility model, the fiberureteroscope guide sheath comprises: a first wire disposed within the clevis, the first wire connecting the first pressure sensor and the temperature sensor.

In some embodiments of the present invention, the first lead has a connection end extending along a length direction of the body, the connection end being attached with a waterproof material so as to be attached to an outer surface of the body, the first lead being used to connect the first pressure sensor and the temperature sensor with an external device.

In addition, the present invention provides a fiberureteroscope guide system, comprising:

according to the fiber ureteroscope guide sheath and the fiber ureteroscope, a channel for perfusate backflow is formed between the elongated main body and the fiber ureteroscope.

In some embodiments of the utility model, one end of the fiberureteroscope is formed with an access end that can reach the renal pelvis via the ureter; and a second pressure sensor for measuring the pressure of the perfusion liquid in the renal pelvis is arranged on the surface of the extending end.

In some embodiments of the utility model, a waterproof material is attached to a surface of the second pressure sensor.

In some embodiments of the present invention, the fiberureteroscope guide system is characterized by comprising: a second lead disposed within the fiber ureter; the second pressure sensor is connected with external equipment through the second lead

The fiber ureteroscope guide sheath and the guide system provided by the utility model can effectively help an operator monitor the pressure generated by the main body of the guide sheath and the inner wall of the ureter in the process of being placed into the renal pelvis, can avoid the situation that the guide sheath is torn off from the ureter due to the too narrow diameter of the ureter, reduce the surgical complications and improve the surgical safety. This fibre ureteroscope guide sheath can also help the art person to monitor the perfusate temperature through the backward flow of renal pelvis (thereby obtain the renal pelvis temperature indirectly), and the art person can be according to finding temperature adjustment rubble frequency and perfusate velocity of flow, keeps the low temperature environment in the renal pelvis, avoids the urinary system damage that the high fever brought, increases the operation security.

Drawings

FIG. 1 is a side cross-sectional view of an introducer sheath provided in accordance with one embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of the clevis of FIG. 1;

FIG. 3 is a transverse cross-sectional view of an introducer sheath provided in accordance with one embodiment of the present invention;

FIG. 4 is a cross-sectional view of a fiberureteroscope, according to one embodiment of the present invention;

fig. 5 is a cross-sectional view of a fiberureteroscope guide system (a fiberureteroscope and guide sheath combination) provided in one embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the utility model to those skilled in the art.

As shown in fig. 1 to 3, the present embodiment provides a fiberureteroscope guide sheath 1 including an elongated main body 11 and a first pressure sensor 12. The elongated body 11 is capable of being mounted over a fiberureteroscope 2 (described in more detail below). The first pressure sensor 12 is provided on the outer surface of the main body 11, and the first pressure sensor 12 is capable of measuring the pressure between the main body 11 of the guide sheath 1 and the inner wall of the ureter during the procedure in which the main body 11 of the guide sheath 1 enters the renal pelvis via the ureter.

Further, the fiberureteroscope guide sheath 1 further includes a temperature sensor 13 disposed on the inner surface of the main body 11, and the temperature sensor 13 is used to measure the temperature of the perfusion fluid that flows back through the renal pelvis.

Based on the structure, the fiber ureteroscope guide sheath 1 can effectively help an operator monitor the pressure generated by the main body 11 of the guide sheath 1 and the inner wall of the ureter in the process of being placed into a renal pelvis, can avoid the occurrence of the situation that the ureter is torn off from the guide sheath 1 due to the fact that the diameter of the ureter is too narrow, reduces operation complications and improves operation safety. This fiber ureteroscope guide sheath 1 can also help the art person to monitor the perfusate temperature through the renal pelvis backward flow (thereby indirectly acquire renal pelvis temperature), and the art person can be according to surveying temperature adjustment rubble frequency and perfusate velocity of flow, keeps the low temperature environment in the renal pelvis, avoids the urinary system damage that the high fever brought, increases the operation security.

Further, the fiberureteroscope guide sheath 1 includes a clevis 14 provided at the front end of the main body 11, and the first pressure sensor 12 and the temperature sensor 13 are fixed to the inner and outer surfaces of the main body 11 of the guide sheath 1 in a manner opposed to each other by the clevis 14 (see fig. 2 and 3).

Further, the present embodiment further includes a first wire 15 disposed inside the clevis 14, and the first wire 15 connects the first pressure sensor 12 and the temperature sensor 13.

Further, in the present embodiment, the first lead 15 has a connection end 15a extending along the length direction of the main body 11 of the guide sheath 1, the connection end 15a is attached with a waterproof material so as to be attached to the outer surface of the main body 11, and the first lead 15 is used to connect the first pressure sensor 12 and the temperature sensor 13 with an external device.

The fiberureteroscope guide sheath 1 provided by the present embodiment is a disposable product, and the first pressure sensor 12 and the temperature sensor 13 are packaged at the front end of the main body 11 of the guide sheath 1.

Fig. 4, which shows the structure of the fiberureteroscope 2 described above. The fiberureteroscope 2 is elongated and can be inserted into the main body 11 of the guide sheath 1. One end of the fiber ureteroscope 2 is formed with an extending end 21a (lower end as shown in fig. 4) that can reach the renal pelvis through the ureter. A second pressure sensor 22 is disposed on the surface of the extending end 21a, and is used for measuring the pressure of the perfusion fluid in the renal pelvis.

Further, a waterproof material is attached to the surface of the second pressure sensor 22, and the first pressure sensor 12 and the fiberureteroscope body 11 are integrally packaged.

Further, a second lead 23 is provided inside the fiberureteroscope 2, and the second pressure sensor 22 is connected to external devices (e.g., a processing device and a display device) through the second lead 23.

Based on the above structure, the second pressure sensor 22 of the fiberureteroscope 2 can indirectly obtain the pressure born by the renal pelvis by measuring the pressure of the perfusate in the renal pelvis, and an operator can obtain the value of the second pressure sensor 22, so as to avoid the backflow of bacteria carried by the perfusate into blood caused by overhigh pressure, and avoid organ damage (reduce the probability of complications) caused by overhigh pressure in the renal pelvis.

As shown in fig. 5, another embodiment provides a fiber ureteroscope guide system 3, which comprises the fiber ureteroscope guide sheath 1 and the fiber ureteroscope 2, wherein a channel for backflow of perfusate is formed between the main body 11 of the elongated guide sheath 1 and the fiber ureteroscope 2.

The fiber ureteroscope guide system 3 that this embodiment provided can show the numerical value that pressure sensor and temperature sensor obtained on external equipment to the art person can in time discover unusually according to the numerical value that it shows, overcomes the difficulty that only can rely on art person's experience and bring when the blind method is operated, is favorable to primary hospital to the popularization of ureteroscope holmium laser lithotripsy.

Finally, it should be noted that the above examples are only used to illustrate the technical solution of the present invention and are not limitative. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or substituted with equivalents without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered by the scope of the claims of the present invention.

Claims

1. Fiberureteroscope guide sheath (1), characterized by comprising:

an elongated main body (11) that can be placed over the fiberureteroscope (2);

a first pressure sensor (12) disposed on an outer surface of the body (11), the first pressure sensor (12) being for measuring a pressure generated between the body (11) and an inner wall of the ureter.

2. Fiber ureteroscope guide sheath (1) according to claim 1, characterized by comprising:

a temperature sensor (13) disposed on an inner surface of the body (11), the temperature sensor (13) for measuring a temperature of the perfusate that flows back through the renal pelvis.

3. Fiber ureteroscope guide sheath (1) according to claim 2, characterized by comprising:

a U-shaped clamp (14) arranged at the front end of the main body (11);

the first pressure sensor (12) and the temperature sensor (13) are fixed to the inner and outer surfaces of the main body (11) by the clevis (14) in an opposed manner.

4. Fiberureteroscope guide sheath (1) according to claim 3, characterized by comprising:

a first wire (15) disposed within the clevis (14), the first wire (15) connecting the first pressure sensor (12) and the temperature sensor (13).

5. Fiber ureteroscope guide sheath (1) according to claim 4, characterized in that:

the first lead (15) has a connection end (15a) extending along the length direction of the main body (11), the connection end (15a) is attached with a waterproof material so as to be attached to the outer surface of the main body (11), and the first lead (15) is used for connecting the first pressure sensor (12) and the temperature sensor (13) with an external device.

6. Fiberureteroscope guide system (3), characterized by comprising:

a fiberureteroscope guide sheath (1) and a fiberureteroscope (2) according to any one of claims 1 to 5, a channel for backflow of perfusion fluid being formed between the elongated body (11) and the fiberureteroscope (2).

7. Fiber ureteroscope guide system (3) according to claim 6, characterized in that:

one end of the fiber ureteroscope (2) is provided with an extending end (21a) which can reach a renal pelvis through a ureter;

the surface of the extending end (21a) is provided with a second pressure sensor (22) for measuring the pressure of the perfusion liquid in the renal pelvis.

8. The fiberureteroscope guide system (3) according to claim 7, wherein:

and a waterproof material is adhered to the surface of the second pressure sensor (22).

9. Fiber ureteroscope guide system (3) according to claim 8, characterized by comprising:

a second guide wire (23) arranged in the fiberureteroscope (2);

the second pressure sensor (22) is connected with an external device through the second lead (23).