A temperature and pressure measuring guide sheath and a temperature and pressure measuring guide system

Abstract

The application relates to a temperature and pressure measuring guide sheath and a temperature and pressure measuring guide system, and belongs to the technical field of medical equipment. The temperature and pressure measuring guide sheath comprises a front-end bendable sheath pipe body and an integrated box sleeved at the rear end of the sheath pipe body. A temperature and pressure sensor module is arranged in the integrated box. A main channel and a secondary channel are arranged in the sheath pipe body in parallel along the axial direction. The main channel penetrates through both ends of the sheath pipe body. A sensor probe and a signal line are arranged in the secondary channel. First and second bypass holes are arranged in the front-end side wall and the rear-end side wall of the sheath pipe body and are communicated with the secondary channel. The sensor probe is sealingly fixed at the front end of the secondary channel and is arranged opposite to the first bypass hole. One end of the signal line is electrically connected with the sensor probe, and the other end of the signal line is electrically connected with the temperature and pressure sensor module after penetrating through the second bypass hole through a sealing element. Thus, direct contact type measurement of the front end of the sensor probe, independent sealing isolation of the secondary channel and integrated installation of the sensor are realized, and the temperature and pressure monitoring precision and real-time performance in the cavity are improved.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, and specifically relates to a temperature and pressure measuring guide sheath and a temperature and pressure measuring guide system. Background Technology

[0002] In urological endoscopic surgeries such as ureteroscopic lithotripsy and percutaneous nephrolithotomy, the guide sheath is used to establish channels for instrument entry, exit, perfusion, and drainage, and is a key instrument to ensure the smooth progress of the surgery. Intraoperative intraluminal pressure and intraluminal temperature are core monitoring parameters. Abnormal values ​​can easily lead to complications such as intrarenal reflux, infection, and kidney damage, directly affecting the safety of the surgery.

[0003] Most existing guiding sheaths only have a single-channel function and lack pressure and temperature measurement capabilities. Intraoperative intracavitary pressure and temperature rely entirely on the surgeon's experience and judgment, lacking objective and real-time monitoring data, which poses significant safety hazards. The few guiding sheaths that do have pressure measurement capabilities mostly use an air column conduction pressure measurement scheme. This method has low measurement accuracy, slow response, and is easily affected by factors such as irrigation fluid flow and changes in body position, and cannot achieve synchronous temperature monitoring. On the other hand, some sensor-type guiding sheaths do not have independent and sealed sensor channels. The sensors are completely exposed or connected to the main channel, making them susceptible to media contamination and signal interference, with poor sealing reliability. In addition, the probe is generally located at the rear and cannot extend to the front end of the sheath, so it cannot directly contact the intraoperative media, resulting in large measurement errors.

[0004] Therefore, there is an urgent need for a temperature and pressure measurement guide sheath and temperature and pressure measurement guide system that can achieve precise monitoring through direct front-end contact, has an independent and enclosed sensor channel, and integrates sensing capabilities. Summary of the Invention

[0005] This invention provides a temperature and pressure measuring guide sheath to solve the technical problems of existing guide sheaths lacking independent closed sensing channels and having rear-mounted probes resulting in inaccurate measurements.

[0006] This invention is achieved through the following technical solution: a temperature and pressure measuring guide sheath, comprising a flexible sheath body at the front end and an integrated box sleeved at the rear end of the sheath body. The integrated box contains a temperature and pressure sensor module. The sheath body has a main channel and a secondary channel parallel to each other along the axial direction. The main channel passes through both ends of the sheath body. The secondary channel contains a sensor probe and a signal line. The front and rear side walls of the sheath body are respectively provided with a first bypass hole and a second bypass hole communicating with the secondary channel. The sensor probe is sealed and fixed at the front end of the secondary channel and is arranged opposite to the first bypass hole. One end of the signal line is electrically connected to the sensor probe, and the other end passes through the second bypass hole via a sealing member and is electrically connected to the temperature and pressure sensor module.

[0007] To better realize the present invention, the above structure is further optimized by providing an electrical connector on one side of the integrated box, and the wires of the temperature and pressure sensor module are electrically connected to the electrical connector.

[0008] To better realize the present invention, the above structure is further optimized, and the sealing element is a rubber plug or sealant.

[0009] To better realize the present invention, further optimizations are made to the above structure. The sheath body includes a rigid section and a flexible bending section, and the first bypass hole is formed on the front sidewall of the flexible bending section.

[0010] A temperature and pressure measurement guidance system includes a dilator conduit, a negative pressure connector tube, and a temperature and pressure measurement guidance sheath. The negative pressure connector tube is detachably fixed to the rear end of the integrated box of the temperature and pressure measurement guidance sheath. The rear end of the sheath body of the temperature and pressure measurement guidance sheath is inserted into the negative pressure connector tube. The dilator conduit passes through the main channel of the sheath body, with its front end extending out of the sheath body and its rear end extending out of the negative pressure connector tube.

[0011] To better realize the present invention, further optimizations are made to the above structure. The negative pressure connector tube is a W-shaped tube. The W-shaped tube includes a device connection section and a negative pressure connection section and a negative pressure adjustment section respectively disposed on both sides of the device connection section. The negative pressure connection section is used to connect an external negative pressure device. The negative pressure adjustment section is provided with an adjustment valve for adjusting the negative pressure. One end of the device connection section is inserted into the rear end of the integrated box and communicates with the main channel for passing through the expander conduit.

[0012] To better realize the present invention, the above structure is further optimized by providing a ring buckle on the same side as the negative pressure regulating section.

[0013] To better realize the present invention, further optimizations are made to the above structure. The negative pressure connector pipe is a Y-shaped pipe, which includes a straight pipe section and an inclined pipe section. One end of the straight pipe section is inserted into the rear end of the integrated box and communicates with the main channel for passing through the expander conduit. The inclined pipe section is connected to one side of the straight pipe section for connecting to an external negative pressure device. A control valve plate is provided on the inclined pipe section for adjusting the magnitude of the negative pressure.

[0014] To better realize the present invention, the above structure is further optimized by including a snap fastener, which is disposed at the rear end of the expander conduit and is used to snap and fix it with the negative pressure connector tube.

[0015] Compared with the prior art, the present invention has the following advantages: The temperature and pressure measuring guide sheath provided by this invention includes a flexible sheath body at the front end and an integrated box sleeved at the rear end of the sheath body. The integrated box houses a temperature and pressure sensor module. The sheath body has a main channel and a secondary channel arranged axially and parallel to each other. The main channel extends through both ends of the sheath body. The secondary channel houses a sensor probe and a signal line. The front and rear sidewalls of the sheath body respectively have a first bypass hole and a second bypass hole communicating with the secondary channel. The sensor probe is sealed and fixed at the front end of the secondary channel and positioned opposite the first bypass hole. One end of the signal line is electrically connected to the sensor probe, and the other end passes through the second bypass hole via a seal and is electrically connected to the temperature and pressure sensor module. With this structure, the sensor probe is sealed and fixed at the front end of the secondary channel and positioned opposite the first bypass hole, thus allowing direct... By contacting the intracavitary medium during surgery, this method abandons the traditional air column conduction pressure measurement method, effectively eliminating conduction errors, response lag, and external interference, and significantly improving the measurement accuracy of intracavitary pressure and temperature. The independently set secondary channel is isolated from the main channel, and the signal line is sealed and fixed with a sealing component, making the secondary channel completely closed to prevent the intrusion of irrigation fluid and tissue fluid, ensuring the reliability of signal transmission. The temperature and pressure sensor module is integrated in the integrated box at the rear end, and the signal line is led out through the second bypass hole and connected to it. The structure is neat and orderly, which facilitates the unified output of signals to external monitoring equipment. The structure is compact, safe and reliable, and suitable for the single-use sterile requirements of urological endoscopic surgeries such as ureteroscopic lithotripsy and percutaneous nephrolithotomy, reducing the risk of intraoperative complications and improving surgical safety.

[0016] This invention also provides a temperature and pressure measurement guidance system, including a dilator catheter, a negative pressure connector tube, and a temperature and pressure measurement guidance sheath. The negative pressure connector tube is detachably fixed to the rear end of the integrated box of the temperature and pressure measurement guidance sheath. The rear end of the sheath body of the temperature and pressure measurement guidance sheath is inserted into the negative pressure connector tube. The dilator catheter passes through the main channel of the sheath body, with its front end extending out of the sheath body and its rear end extending out of the negative pressure connector tube. This configuration allows for the rapid establishment of a surgical pathway through the dilator catheter, and enables intraoperative irrigation and drainage as well as negative pressure regulation through the negative pressure connector tube. It is reliably connected to the temperature and pressure measurement guidance sheath, is easy to assemble, and flexible to operate. It integrates multiple functions such as channel establishment, real-time temperature and pressure monitoring, and negative pressure drainage, adapting to the endoscopic surgical procedure in urology. It balances operational convenience with intraoperative monitoring safety, effectively improving surgical efficiency and reducing the risk of complications. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a cross-sectional view of the temperature and pressure measuring guide sheath in this invention; Figure 2 yes Figure 1 A magnified view of part A in the image; Figure 3 This is a perspective view of the temperature and pressure measuring guide sheath in this invention; Figure 4 This is a perspective view of the temperature and pressure measurement guidance system in this invention; Figure 5 This is a perspective view of another embodiment of the temperature and pressure measurement guidance system of the present invention; Figure 6 This is a cross-sectional view of the temperature and pressure measurement guidance system in this invention.

[0019] In the picture: 1-Sheath body; 2-Integrated box; 3-Temperature and pressure sensor module; 4-Main channel; 5-Secondary channel; 6-Sensor probe; 7-Signal line; 8-First bypass hole; 9-Second bypass hole; 10-Snap fastener; 11-Electrical connector; 12-Rigid section; 13-Flexible bending section; 14-Expander guide tube; 15-Equipment connection section; 16-Negative pressure connection section; 17-Negative pressure regulating section; 18-Regulating valve; 19-Finger ring buckle; 20-Straight pipe section; 21-Inclined pipe section; 22-Control valve plate. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0021] In the description of this invention, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention 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 the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this invention, it should also 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. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0023] Example 1: In this embodiment, a temperature and pressure measuring guiding sheath, such as Figures 1 to 3 As shown, the device includes a flexible sheath body 1 at the front end and an integrated box 2 sleeved at the rear end of the sheath body 1. The integrated box 2 contains a temperature and pressure sensor module 3. The sheath body 1 has a main channel 4 and a secondary channel 5 arranged parallel to each other along the axial direction. The main channel 4 passes through both ends of the sheath body 1. The secondary channel 5 contains a sensor probe 6 and a signal line 7. The two ends of the secondary channel 5 are not connected. The front and rear side walls of the sheath body 1 are respectively provided with a first bypass hole 8 and a second bypass hole 9 that communicate with the secondary channel 5. The sensor probe 6 is sealed and fixed at the front end of the secondary channel 5 and is arranged opposite to the first bypass hole 8, so that the sensing surface of the sensor probe 6 corresponds to the first bypass hole 8, and can directly contact and sense the temperature and pressure of the medium in the cavity. One end of the signal line 7 is electrically connected to the sensor probe 6, and the other end passes through the second bypass hole 9 through the sealing member and is electrically connected to the temperature and pressure sensor module 3.

[0024] With this structure, the sensor probe 6 is sealed and fixed at the front end of the secondary channel 5 and is positioned opposite to the first bypass hole 8, allowing direct contact with the intraoperative intracavitary medium. This eliminates the traditional air column conduction pressure measurement method, effectively removing conduction errors, response lag, and external interference, and significantly improving the measurement accuracy of intracavitary pressure and temperature. The independently configured secondary channel 5 is isolated from the main channel 4, and the signal line 7 is sealed and fixed by the sealing component, ensuring that the secondary channel 5 is completely closed, preventing the intrusion of irrigation fluid and tissue fluid, and ensuring the reliability of signal transmission. The temperature and pressure sensor module 3 is integrated into the integrated box 2 at the rear end, and the signal line 7 is sealed and led out through the second bypass hole 9 and connected to it. The structure is well-organized, facilitating unified signal output to external monitoring equipment. The structure is compact, safe, and reliable, suitable for the disposable sterile use requirements of urological endoscopic surgeries such as ureteroscopic lithotripsy and percutaneous nephrolithotomy, reducing the risk of intraoperative complications and improving surgical safety.

[0025] In this embodiment, as Figure 1As shown, the integrated box 2 is a structural component formed by two half-shells fastened together. A mounting plate is fixed inside the integrated box 2 by fasteners. The temperature and pressure sensor module 3 is fixed on the mounting plate. A groove is formed on the mounting plate to limit and constrain the sheath body 1 and prevent the sheath body 1 from shifting laterally and longitudinally.

[0026] Furthermore, an electrical connector 11 is provided on one side of the integrated box 2. The wires of the temperature and pressure sensor module 3 are electrically connected to the electrical connector 11. The standardized electrical connector 11 facilitates quick connection to external monitoring equipment, thereby outputting temperature and pressure monitoring signals with stable and reliable transmission.

[0027] In this embodiment, the sealing element is a rubber plug or sealant, which can reliably seal the gap between the second bypass hole 9 and the signal line 7. In conjunction with the sensor probe 6, the front end of the sub-channel 5 is sealed by the sealant, so that the sub-channel 5 between the sensor probe 6 and the second bypass hole 9 is completely independent, preventing the infusion fluid and tissue fluid from seeping in, avoiding the signal line 7 and the connection between the signal line 7 and the sensor probe 6 from getting damp, contaminated or short-circuited, and ensuring stable signal transmission.

[0028] In this embodiment, as Figure 3 As shown, the sheath body 1 includes a rigid section 12 and a flexible curved section 13. The first bypass hole 8 is opened on the front side wall of the flexible curved section 13, so that the sensor probe 6 can be precisely inserted into the surgical cavity along with the flexible curved section 13. Compared with the rear-positioned probe in the prior art, the sensor probe 6 can always be close to the monitoring site, ensuring the accuracy of direct contact measurement of temperature and pressure, and the measurement accuracy is higher.

[0029] The aforementioned temperature and pressure measuring guide sheath, through the independently sealed secondary channel 5, places the sensor probe 6 at the front end of the sheath body 1, enabling direct contact temperature and pressure measurement of the intracavitary medium. This method offers high accuracy and fast response. The secondary channel 5 is fully sealed to prevent liquid intrusion and signal interference. The rear integrated box 2 houses the aforementioned temperature and pressure sensor module 3 and features a side-mounted electrical connector 11 for easy connection to external monitoring equipment and stable data transmission. The sheath body 1 employs a rigid section 12 and a flexible bending section 13 structure, allowing the sensor probe 6 to precisely position itself along the flexible bending section 13 at the front end. The overall structure is compact, reliably sealed, and provides more accurate measurements, meeting the requirements for disposable sterile use in urological endoscopic surgery and enhancing intraoperative monitoring and surgical safety.

[0030] Example 2: In this embodiment, a temperature and pressure measurement guidance system, such as Figure 4 and Figure 5As shown, it includes a dilator conduit 14, a negative pressure connector tube, and a temperature and pressure measuring guide sheath. Specifically, the negative pressure connector tube is detachably fixed to the rear end of the integrated box 2 of the temperature and pressure measuring guide sheath. The rear end of the sheath body 1 of the temperature and pressure measuring guide sheath is inserted into the negative pressure connector tube. The dilator conduit 14 passes through the main channel 4 of the sheath body 1. The front end of the dilator conduit 14 extends out of the sheath body 1 and the rear end extends out of the negative pressure connector tube.

[0031] This setup allows for the rapid establishment of a surgical pathway via the aforementioned dilator catheter 14. Combined with the aforementioned negative pressure connector tube, it enables intraoperative irrigation and drainage as well as negative pressure regulation. It is reliably connected to the temperature and pressure measuring guide sheath, making assembly convenient and operation flexible. Integrating multiple functions such as pathway establishment, real-time temperature and pressure monitoring, and negative pressure drainage, it is compatible with the endoscopic surgical procedure in urology, balancing ease of operation with intraoperative monitoring safety, effectively improving surgical efficiency and reducing the risk of complications.

[0032] As one specific implementation method of this embodiment, such as Figure 4 As shown, the aforementioned negative pressure connector tube is a W-shaped tube. The W-shaped tube includes an equipment connection section 15 and negative pressure connection sections 16 and negative pressure adjustment sections 17 located on both sides of the equipment connection section 15. The negative pressure connection section 16 is used to connect to an external negative pressure device. The negative pressure adjustment section 17 is equipped with an adjustment valve 18 for adjusting the negative pressure. One end of the equipment connection section 15 is inserted into the rear end of the integrated box 2 and connected to the main channel 4 for passing through the expander catheter 14. The W-shaped tube structure simultaneously realizes the functions of negative pressure access, negative pressure adjustment, and instrument connection. The adjustment valve 18 can dynamically adjust the negative pressure intensity as needed to adapt to different drainage and irrigation needs during surgery. The equipment connection section 15 is firmly inserted into the integrated box 2, with good sealing performance and convenient disassembly and assembly, ensuring smooth negative pressure conduction without leakage, and improving the convenience of intraoperative operation and drainage efficiency.

[0033] As an optimization, the aforementioned W-shaped tube is provided with a finger ring buckle 19 located on the same side as the aforementioned negative pressure adjustment section 17, which makes it easy to hold and operate during operation.

[0034] As another specific implementation of this embodiment, such as Figure 5 and Figure 6As shown, the negative pressure connector tube is a Y-shaped tube, which includes a straight section 20 and an inclined section 21. One end of the straight section 20 is inserted into the rear end of the integrated box 2 and connected to the main channel 4 for passing through the expander catheter 14. The inclined section 21 is connected to one side of the straight section 20 for connecting to an external negative pressure device. The inclined section 21 is equipped with a control valve 22 for adjusting the negative pressure. The Y-shaped tube structure is simpler. The straight section 20 is straight and unobstructed to ensure smooth passage of instruments. The inclined section 21 is placed on the side to facilitate quick insertion of the negative pressure line. The control valve 22 can be flexibly opened and closed and the negative pressure can be adjusted. It is more suitable for single-handed grasping and operation. The overall connection is stable and has good sealing performance, which simplifies the intraoperative tubing layout and adapts to different surgical operation habits.

[0035] It should be noted that integrating a negative pressure device onto the sheath is a very mature existing technology in the field of guide sheaths. The rotary regulating valve 18 and the movable control valve plate 22 that are used in this field are widely used. Therefore, the specific connection method between the negative pressure connector pipe and the sheath body 1, as well as the valve's adjustment principle for negative pressure, will not be repeated here.

[0036] In this embodiment, as Figure 4 As shown, it also includes a buckle 10, which is located at the rear end of the dilator catheter 14. The buckle 10 is used to engage and fix the dilator catheter 14 and the negative pressure connector tube, which can realize quick and reliable positioning and fixation between the dilator catheter 14 and the negative pressure connector tube, prevent the catheter from slipping or falling out during the operation, improve assembly stability and operation safety. The tail end of the negative pressure connector tube can be provided with multiple annular grooves so as to engage with the buckle 10. No additional tools are required, which facilitates quick assembly and disassembly during the operation and improves the efficiency of surgical operation.

[0037] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A temperature and pressure measuring guiding sheath, characterized in that: The device includes a flexible sheath body (1) and an integrated box (2) fitted onto the rear end of the sheath body (1). The integrated box (2) contains a temperature and pressure sensor module (3). The sheath body (1) contains a main channel (4) and a secondary channel (5) that are parallel to each other along the axial direction. The main channel (4) passes through both ends of the sheath body (1). The secondary channel (5) contains a sensor probe (6) and a signal line (7). The front and rear side walls of the sheath body (1) are respectively provided with a first bypass hole (8) and a second bypass hole (9) that communicate with the secondary channel (5). The sensor probe (6) is sealed and fixed at the front end of the secondary channel (5) and is positioned opposite to the first bypass hole (8). One end of the signal line (7) is electrically connected to the sensor probe (6), and the other end passes through the second bypass hole (9) through a sealing element and is electrically connected to the temperature and pressure sensor module (3).

2. The temperature and pressure measuring guide sheath according to claim 1, characterized in that: The integrated box (2) has an electrical connector (11) on one side, and the wires of the temperature and pressure sensor module (3) are electrically connected to the electrical connector (11).

3. The temperature and pressure measuring guide sheath according to claim 1, characterized in that: The sealing element is a rubber plug or sealant.

4. The temperature and pressure measuring guide sheath according to claim 1, characterized in that: The sheath body (1) includes a rigid section (12) and a flexible curved section (13), and the first bypass hole (8) is opened on the front side wall of the flexible curved section (13).

5. A temperature and pressure measurement guidance system, characterized in that: The device includes an expander catheter (14), a negative pressure connector tube, and a temperature and pressure measuring guide sheath as described in any one of claims 1-4. The negative pressure connector tube is detachably fixed to the rear end of the integrated box (2) of the temperature and pressure measuring guide sheath. The rear end of the sheath body (1) of the temperature and pressure measuring guide sheath is inserted into the negative pressure connector tube. The expander catheter (14) passes through the main channel (4) of the sheath body (1). The front end of the expander catheter (14) extends out of the sheath body (1) and the rear end extends out of the negative pressure connector tube.

6. The temperature and pressure measurement guidance system according to claim 5, characterized in that: The negative pressure connector pipe is a W-shaped pipe. The W-shaped pipe includes a device connection section (15) and a negative pressure connection section (16) and a negative pressure adjustment section (17) respectively disposed on both sides of the device connection section (15). The negative pressure connection section (16) is used to connect to an external negative pressure device. The negative pressure adjustment section (17) is provided with an adjustment valve (18) for adjusting the negative pressure. One end of the device connection section (15) is inserted into the rear end of the integrated box (2) and communicates with the main channel (4) for passing through the expander conduit (14).

7. The temperature and pressure measurement guidance system according to claim 6, characterized in that: The W-shaped tube is provided with a ring buckle (19) located on the same side as the negative pressure regulating section (17).

8. The temperature and pressure measurement guidance system according to claim 5, characterized in that: The negative pressure connector pipe is a Y-shaped pipe, which includes a straight pipe section (20) and an inclined pipe section (21). One end of the straight pipe section (20) is inserted into the rear end of the integrated box (2) and connected to the main channel (4) for passing through the expander conduit (14). The inclined pipe section (21) is connected to one side of the straight pipe section (20) for connecting to an external negative pressure device. An inclined pipe section (21) is provided on the inclined pipe section (21) for adjusting the magnitude of the negative pressure.

9. A temperature and pressure measurement guidance system according to claim 5, characterized in that: It also includes a snap fastener (10), which is located at the rear end of the expander conduit (14) and is used to snap and fix it to the negative pressure connector tube.

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