A body cavity hyperthermic perfusion assembly for pressure monitoring

Abstract

The application provides a body cavity hot perfusion assembly for pressure monitoring, which comprises a catheter kit, the catheter kit comprises a tube body, a drainage connector and a pressure measuring sheath connector, the tube body is provided with a drainage channel and a pressure measuring sheath channel which are spaced from each other, the drainage channel and the pressure measuring sheath channel are communicated with the head end and the tail end of the tube body respectively, the drainage connector and the pressure measuring sheath connector are connected with the tail end of the tube body, the drainage connector is communicated with the drainage channel, and the pressure measuring sheath connector is communicated with the pressure measuring sheath channel; a pressure sensor kit, the pressure sensor kit comprises a multi-way pipe, a pressure sensor and a signal output line, the multi-way pipe is communicated between the pressure measuring sheath connector and the pressure sensor, and the pressure sensor is connected with the signal output line, so that medical staff can accurately master the dynamic change of body cavity perfusion pressure and pipeline pressure difference, the body difference of patient tolerance to hot perfusion pressure and pipeline pressure difference is greatly improved, the treatment effect is improved, and complications are reduced.

Description

Technical Field

[0001] This invention relates to a pressure monitoring intracavitary thermal perfusion assembly. Background Technology

[0002] Intracavitary hyperthermic perfusion (ICP) involves heating a large volume of perfusion fluid to a specific temperature and continuously circulating it into the patient's body cavities, including the thoracic cavity, abdominal cavity, pelvic cavity, and bladder. This treatment method effectively removes lesions through the synergistic effects of temperature and medication, along with the flushing effect of the circulating perfusion. While significant progress has been made in temperature and flow rate control during ICP, the inability to maintain a constant perfusion pressure during circulation leads to a higher incidence of ICP-related complications. In particular, excessively high perfusion pressure during thoracic ICP significantly increases the risk of atelectasis, severely impacting the safety and effectiveness of the perfusion.

[0003] Therefore, there is an urgent need for a technical solution to the pressure monitoring problem in hyperthermic perfusion therapy. Summary of the Invention

[0004] The purpose of this invention is to solve the technical problem of pressure monitoring in hyperthermic perfusion therapy.

[0005] To address the aforementioned problems, the present invention provides a pressure-monitoring intracavitary hyperthermic perfusion assembly, comprising:

[0006] A catheter kit, comprising a tube body, a drainage connector, and a pressure-measuring sheath connector, wherein the tube body has a drainage channel and a pressure-measuring sheath channel spaced apart from each other, the drainage channel and the pressure-measuring sheath channel being respectively connected to the head end and the tail end of the tube body, the drainage connector and the pressure-measuring sheath connector being connected to the tail end of the tube body, the drainage connector being connected to the drainage channel, and the pressure-measuring sheath connector being connected to the pressure-measuring sheath channel;

[0007] A pressure sensor kit, comprising a multi-port tube, a pressure sensor, and a signal output line, wherein the multi-port tube connects the pressure sheath connector and the pressure sensor, and the pressure sensor is connected to the signal output line.

[0008] In a preferred embodiment, the multi-port pipe includes:

[0009] The first tube is connected to the pressure measuring sheath connector;

[0010] The second tube includes a second tube section and a second interface section. The second tube section is connected between the first tube and the second interface section. The pressure sensor is connected to the second tube section, and the second interface section serves as an interface for venting and zeroing.

[0011] In a preferred embodiment, the multi-port pipe further includes:

[0012] The third pipe includes a third pipe section and a third interface section. The third pipe section is connected between the first pipe and the third interface section. The third interface section serves as a water injection interface section and is connected to a valve.

[0013] In a preferred embodiment, the pressure sensor kit further includes a fixing member connected to the bottom of the pressure sensor.

[0014] In a preferred embodiment, the fixing member includes two fixing wings, which are respectively disposed on both sides of the pressure sensor.

[0015] In a preferred embodiment, the signal output line includes a first output line and a second output line;

[0016] The pressure sensor kit also includes a first tail connector, a second head connector, and a second tail connector. The first output line is connected between the pressure sensor and the first tail connector, the second output line is connected between the second head connector and the second tail connector, the second head connector is connected to the first tail connector, and the second tail connector is connected to the monitor.

[0017] In a preferred embodiment, the tube body is provided with a plurality of drainage holes, which are located near the head end of the tube body. The drainage holes and the drainage channels are connected in a corresponding manner. The drainage holes are not provided on the side wall of the tube body corresponding to the pressure measuring sheath channel.

[0018] In a preferred embodiment, the length and color of the drainage connector and the pressure testing sheath connector are different.

[0019] In a preferred embodiment, the surface of the tube is provided with graduations.

[0020] In a preferred embodiment, the head end of the tube is blunt, and the tube is a soft, hollow tube structure.

[0021] Compared with existing technologies, this technical solution has the following advantages:

[0022] The pressure measuring sheath channel serves as the pressure measuring channel. Utilizing the pressure sensor, the signal is fed back to the connected monitor via the signal output line. This transforms intracavitary hyperthermic perfusion from indirect external pressure measurement to direct internal pressure measurement, greatly improving the accuracy of intracavitary pressure measurement during hyperthermic perfusion therapy. In particular, it eliminates the influence of the external environment and pipeline flow on pressure during hyperthermic perfusion, enabling medical personnel to accurately grasp the dynamic changes in intracavitary perfusion pressure.

[0023] The catheter kit can serve as an inflow and outflow channel in the hyperthermic perfusion therapy conduit, and can simultaneously and accurately monitor the dynamic changes in body cavity perfusion pressure and conduit pressure difference. This greatly improves the individual differences in patients' tolerance to hyperthermic perfusion pressure and conduit pressure difference, enhances treatment efficacy, reduces complications, and provides a standardized and precise research path for establishing individualized hyperthermic perfusion pressure and conduit pressure difference data.

[0024] In addition to being distinguished by color, the drainage connector and the pressure-measuring sheath connector can also be distinguished by their unequal lengths to avoid misconnection of the hot irrigation drainage tube and the multi-port tube, thereby improving the safety of treatment.

[0025] By setting the drainage hole near the head end of the tube, the problems of liquid blockage and poor flow during hot perfusion can be effectively solved, thus ensuring the treatment effect and quality and having great practical value.

[0026] The tube body is designed with a blunt tip and adopts a soft hollow tube structure. While ensuring heat circulation perfusion, it avoids damage to internal tissues and organs as much as possible, reduces stimulation, alleviates treatment pain, and further ensures the treatment effect.

[0027] The precision pressure and flow control thermal perfusion component designed in this invention is ingenious and reasonable, with a simple structure, convenient operation, and high pressure measurement accuracy. It facilitates the monitoring of dynamic changes in body cavity pressure, does not increase damage to patient tissues and organs, reduces complications, has stable performance, ensures safety during treatment, and can be reused repeatedly, thus having great application value.

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the catheter kit in the body cavity hyperthermic perfusion assembly for pressure monitoring described in this invention;

[0030] Figure 2 This is a schematic diagram of a drainage hole opened on the tube body in the pressure monitoring body cavity thermal infusion assembly of the present invention;

[0031] Figure 3 This is a schematic diagram showing the scale set on the tube body of the pressure monitoring cavity thermal infusion assembly described in this invention;

[0032] Figure 4 This is a front view of the assembly of the multi-port tube and the first tail connector in the body cavity thermal perfusion assembly for pressure monitoring according to the present invention.

[0033] Figure 5 This is a top view of the assembly of the multi-port tube and the first tail connector in the body cavity thermal perfusion assembly for pressure monitoring according to the present invention.

[0034] Figure 6 This is a front view of the second head connector and the second tail connector in the body cavity thermal perfusion assembly for pressure monitoring according to the present invention.

[0035] Figure 7 This is a top view of the second head connector and the second tail connector in the body cavity thermal perfusion assembly for pressure monitoring according to the present invention.

[0036] Figure 8 This is a schematic diagram of the structure of the second connector in the body cavity thermal perfusion assembly for pressure monitoring described in this invention.

[0037] In the diagram: 100 catheter kit, 110 tube body, 110a drainage channel, 110b pressure measuring sheath channel, 111 drainage hole, 112 scale, 120 drainage connector, 130 pressure measuring sheath connector, 200 pressure sensor kit, 210 multi-port tube, 211 first tube, 212 second tube, 2121 second tube section, 2122 second interface section, 213 third tube, 2131 third tube section, 2132 third interface section, 220 pressure sensor, 230 signal output line, 231 first output line, 232 second output line, 240 fixing piece, 241 fixing wing, 250 first tail connector, 251 first tail insulating handle, 252 first tail plug, 260 second head connector, 261 second head insulating handle, 262 second head plug, 270 second tail connector, 271 second tail insulating handle, 272 second tail plug. Detailed Implementation

[0038] The following description is intended to disclose the present invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.

[0039] like Figure 1 and Figure 4 As shown, the pressure monitoring intracavitary hyperthermic perfusion assembly includes:

[0040] A catheter kit 100 includes a tube body 110, a drainage connector 120, and a pressure-measuring sheath connector 130. The tube body 110 has drainage channels 110a and pressure-measuring sheath channels 110b spaced apart from each other. The drainage channels 110a and the pressure-measuring sheath channels 110b are respectively connected to the head end and the tail end of the tube body 110. The drainage connector 120 and the pressure-measuring sheath connector 130 are connected to the tail end of the tube body 110. The drainage connector 120 is connected to the drainage channel 110a, and the pressure-measuring sheath connector 130 is connected to the pressure-measuring sheath channel 110b.

[0041] A pressure sensor kit 200 includes a multi-port tube 210, a pressure sensor 220, and a signal output line 230. The multi-port tube 210 connects the pressure sheath connector 130 and the pressure sensor 220, and the pressure sensor 220 is connected to the signal output line 230.

[0042] The drainage channel 110a can serve as the inflow channel in the hyperthermic perfusion therapy tubing, and the pressure measuring sheath channel 110b serves as the pressure measuring channel. Utilizing the pressure sensor 220, the signal is fed back to the connected monitor via the signal output line 230, facilitating medical staff to accurately monitor the dynamic changes in body cavity perfusion pressure and tubing pressure difference. This significantly improves the individualized differences in patients' tolerance to hyperthermic perfusion pressure and tubing pressure difference, enhances treatment efficacy, reduces complications, and provides a standardized and precise research path for establishing individualized hyperthermic perfusion pressure and tubing pressure difference data.

[0043] like Figure 1 As shown, the tube body 110, the drainage connector 120, and the pressure measuring sheath connector 130 can be integrally formed. The tube body 110 is a soft hollow tube structure, with drainage channels 110a and pressure measuring sheath channels 110b spaced apart inside. The drainage channels 110a and the pressure measuring sheath channels 110b are respectively connected to the head end and the tail end of the tube body 110. Thus, when the head end of the tube body 110 is placed into the body cavity, the drainage channels 110a and the pressure measuring sheath channels 110b are not connected inside the tube body 110, and the drainage channels 110a and the pressure measuring sheath channels 110b are respectively connected to the body cavity.

[0044] The inner diameter of the drainage channel 110a is larger than the inner diameter of the pressure measuring sheath channel 110b, wherein the inner diameter of the drainage channel 110a is 6mm and the wall thickness is 1mm, and the inner diameter of the pressure measuring sheath channel 110b is 2mm.

[0045] The drainage connector 120 and the tube body 110 are located on the same straight line. The drainage connector 120 can be a standard screw-type medical connector as a thermochemotherapy connector, directly connecting to the body cavity. It can be made into a red connector. The outer diameter a1 of the drainage connector 120 is 10mm, and the length a2 is 68mm. The drainage connector 120 is connected to a thermo-perfusion drainage tube to introduce the perfusion fluid into the body cavity through the drainage channel 110a, so that the drainage channel 110a and the thermo-perfusion drainage tube together form a thermochemotherapy circulation pathway.

[0046] The pressure-sensing sheath connector 130 and the tube body 110 are angled, approximately 120°, but not limited to this. The pressure-sensing sheath connector 130 can be a standard threaded medical connector and communicates with the pressure-sensing sheath channel 110b. It can be made with a blue connector to distinguish it from the drainage connector 120. The outer diameter b1 of the interface of the pressure-sensing sheath connector 130 is 8mm, the outer wall diameter b2 is 13mm, the length b3 is 23mm, and the middle diameter b4 is 11mm. The pressure-sensing sheath connector 130 connects to the multi-port tube 210 with the pressure sensor 220 for pressure measurement.

[0047] In addition to being distinguished by color, the drainage connector 120 and the pressure measuring sheath connector 130 can also be distinguished by their unequal lengths, which avoids misconnection of the hot irrigation drainage tube and the multi-port tube 210 and improves the safety of treatment.

[0048] refer to Figure 1 The outer diameter of the tube body 110 is 8mm, the total length is 415mm, and the length from the head end of the tube body 110 to the tail end of the drainage connector 120 is 410mm.

[0049] The tip of the tube 110 is obtuse, meaning the tip of the tube 110 is designed to be blunt and uses a soft hollow tube structure. This ensures heat circulation perfusion while minimizing damage to internal tissues and organs, reducing stimulation, alleviating treatment pain, and further guaranteeing treatment effectiveness.

[0050] like Figure 1 and Figure 2 As shown, the tube body 110 has several drainage holes 111, which are located near the head end of the tube body 110. The drainage holes 111 and the drainage channels 110a are correspondingly connected. By setting the drainage holes 111, problems such as fluid blockage and poor flow during hot perfusion can be effectively solved, effectively ensuring the treatment effect and quality, and has great practical value.

[0051] Furthermore, a plurality of drainage holes 111 are formed on the side wall of the tube body 110 at a distance of 8 mm to 100 mm from the head end of the tube body 110, that is, the drainage holes 111 are located close to the head end of the tube body 110. The plurality of drainage holes 111 are spaced apart along the length direction of the tube body 110, and the plurality of drainage holes 111 can be divided into at least two rows, with the drainage holes 111 in each row spaced apart along the length direction of the tube body 110. When the drainage holes 111 are divided into two rows, the drainage holes 111 in the two rows are staggered, that is, the drainage holes in one row are located between two drainage holes in the other row.

[0052] Furthermore, the drainage hole 111 may be elliptical, with a major axis of 4mm, a minor axis of 2mm, and a distance of 6mm between two adjacent drainage holes 111.

[0053] It should be noted that the drainage hole 111 corresponds to the drainage channel 110a, while the side wall of the tube body 110 corresponding to the pressure measuring sheath channel 110b does not have a drainage hole 111.

[0054] like Figure 3 As shown, the surface of the tube 110 is provided with a scale 112. The scale 112 is set along the length direction of the tube 110, which helps to control the insertion depth, avoid bending, and further ensure the treatment effect.

[0055] like Figure 4 and Figure 5 As shown, the multi-port pipe 210 includes:

[0056] The first tube 211 is connected to the pressure measuring sheath connector 130;

[0057] The second tube 212 includes a second tube section 2121 and a second interface section 2122. The second tube section 2121 is connected between the first tube 211 and the second interface section 2122. The pressure sensor 220 is connected to the second tube section 2121. The second interface section 2122 serves as an interface for venting and zeroing.

[0058] The third pipe 213 includes a third pipe section 2131 and a third interface section 2132. The third pipe section 2131 is connected between the first pipe 211 and the third interface section 2132. The third interface section 2132 serves as a water injection interface and is connected to a valve.

[0059] The multi-port tube 210 can be a tee tube, and the first tube 211, the second tube 212, and the third tube 213 can all use standard threaded medical connectors. The overall length of the multi-port tube 210 is 85mm, the height is 28mm, and the outer diameter of the connector of the second interface 2122 is 6mm.

[0060] The pressure sensor 220 has a sensor chip inside for monitoring pressure and feeds it back to the connected monitor through the signal output line 230.

[0061] like Figure 5 As shown, the pressure sensor kit 200 also includes a fixing member 240, which is connected to the bottom of the pressure sensor 220 to fix the pressure sensor kit 200.

[0062] The fixing component 240 includes two fixing wings 241, which are respectively disposed on both sides of the pressure sensor 220. Each fixing wing 241 has an elongated hole 2411 for fixing by screws or the like. The width of the fixing wing 241 is 40mm.

[0063] like Figures 4 to 8 As shown, the signal output line 230 includes a first output line 231 and a second output line 232;

[0064] The pressure sensor kit 200 also includes a first tail connector 250, a second head connector 260, and a second tail connector 270. The first output line 231 is connected between the pressure sensor 220 and the first tail connector 250. The second output line 232 is connected between the second head connector 260 and the second tail connector 270. The second head connector 260 is connected to the first tail connector 250, and the second tail connector 270 is connected to the monitor.

[0065] The overall length of the multi-port pipe 210, the first output line 231, and the first tail connector 250 after connection is 405mm.

[0066] like Figure 4 and Figure 5 As shown, the first tail connector 250 includes a first insulating handle 251 and a first plug 252. The first insulating handle 251 is connected between the first output line 231 and the first plug 252. The length c23 of the first insulating handle 251 is 16mm, the width c22 is 20mm, and the height c21 is 17mm. The length c32 of the first plug 252 is 15mm, and the height c31 is 6mm. The length c1 of the first tail connector 250 is 31mm. The first tail connector 250 and the first output line 231 are located on the same straight line.

[0067] like Figure 6 and Figure 7 As shown, the second connector 260 is connected to the first connector 250. The second connector 260 includes a second insulating handle 261 and a second plug 262. The second insulating handle 261 is connected between the second plug 262 and the second output line 232. The total length d2 of the second connector 260 is 32 mm, the height d1 of the second insulating handle 261 is 15 mm, the height d4 of the second plug 262 is 10 mm, and the width d3 is 21 mm. The second connector 260 and the second output line 232 are located on the same straight line.

[0068] The second tail connector 270 connects to a monitor equipped with an invasive blood pressure measurement module. The second tail connector 270 includes a second insulating handle 271 and a second plug 272. The second insulating handle 271 connects between the second output line 232 and the second plug 272. The angle between the second tail connector 270 and the second output line 232 is approximately 135° for easy gripping and insertion. The second insulating handle 271 is roughly circular with a radius of 13mm and a width e4 of 18mm. The second plug 272 has a length e2 of 10mm and a width e3 of 17mm. The overall length e1 of the second tail connector 270 is 60mm.

[0069] The method of using the pressure monitoring intracavitary hyperthermic perfusion assembly is as follows:

[0070] The first tail connector 250 and the second head connector 260 are connected, and the first tail connector 252 is connected to a monitor with an invasive blood pressure measurement module. Then, the head end of the tube 110 is placed into the body cavity, and the perfusion fluid is introduced into the body cavity through the drainage channel 110a via the drainage connector 120 connected to the hyperthermic perfusion tube. The pressure is detected by the pressure sensor 220 and displayed on the monitor. This allows for direct monitoring of the dynamic changes in intracavitary pressure during hyperthermic chemotherapy. The intracavitary hyperthermic perfusion method transforms the original indirect external pressure measurement into direct internal pressure measurement, greatly improving the accuracy of intracavitary pressure measurement during hyperthermic perfusion therapy. In particular, it eliminates the influence of the external environment and tube flow rate on pressure during hyperthermic perfusion, enabling medical personnel to accurately grasp the dynamic changes in intracavitary pressure.

[0071] In summary, the catheter kit 100 can serve as the inflow and outflow channel in the hyperthermic perfusion therapy conduit, and the pressure measuring sheath channel 110b serves as the pressure measuring channel. Utilizing the pressure sensor 220, the signal is fed back to the connected monitor via the signal output line 230, facilitating accurate monitoring of the dynamic changes in body cavity perfusion pressure and conduit pressure difference by medical personnel. This significantly improves the individualized differences in patients' tolerance to hyperthermic perfusion pressure and conduit pressure difference, enhances treatment efficacy, reduces complications, and provides a standardized and precise research path for establishing individualized hyperthermic perfusion pressure and conduit pressure difference data.

[0072] The precision pressure and flow control thermal perfusion component designed in this invention is ingenious and reasonable, with a simple structure, convenient operation, and high pressure measurement accuracy. It facilitates the monitoring of dynamic changes in body cavity pressure, does not increase damage to patient tissues and organs, reduces complications, has stable performance, ensures safety during treatment, and can be reused repeatedly, thus having great application value.

[0073] The embodiments described above are only used to illustrate the technical ideas and features of the present invention. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. The scope of patent application of the present invention should not be limited by these embodiments. That is, any equivalent changes or modifications made in accordance with the spirit disclosed in the present invention still fall within the patent scope of the present invention.

Claims

1. A pressure-monitoring intracavitary hyperthermic perfusion assembly, characterized in that, include: A catheter kit (100) includes a tube body (110), a drainage connector (120), and a pressure-measuring sheath connector (130). The tube body (110) has drainage channels (110a) and pressure-measuring sheath channels (110b) spaced apart from each other. The drainage channels (110a) and the pressure-measuring sheath channels (110b) are respectively connected to the head end and the tail end of the tube body (110). The drainage connector (120) and the pressure-measuring sheath connector (130) are connected to the tail end of the tube body (110). The drainage connector (120) is connected to the drainage channel (110a), and the pressure-measuring sheath connector (130) is connected to the pressure-measuring sheath channel (110b). A pressure sensor kit (200) includes a multi-port tube (210), a pressure sensor (220), and a signal output line (230). The multi-port tube (210) is connected between the pressure sheath connector (130) and the pressure sensor (220), and the pressure sensor (220) is connected to the signal output line (230). The multi-port pipe (210) includes: The first tube (211) is connected to the pressure measuring sheath connector (130). The second tube (212) includes a second tube section (2121) and a second interface section (2122). The second tube section (2121) is connected between the first tube (211) and the second interface section (2122). The pressure sensor (220) is connected to the second tube section (2121). The second interface section (2122) serves as an interface for venting and zeroing. The pressure sensor kit (200) also includes a fastener (240) attached to the bottom of the pressure sensor (220).

2. The body cavity thermal perfusion assembly for pressure monitoring as described in claim 1, characterized in that, The multi-port tube (210) also includes: The third pipe (213) includes a third pipe section (2131) and a third interface section (2132). The third pipe section (2131) is connected between the first pipe (211) and the third interface section (2132). The third interface section (2132) serves as an interface for water injection and is connected to a valve.

3. The body cavity thermal perfusion assembly for pressure monitoring as described in claim 1, characterized in that, The fixing member (240) includes two fixing wings (241), which are respectively disposed on both sides of the pressure sensor (220).

4. The body cavity thermal perfusion assembly for pressure monitoring as described in claim 1, characterized in that, The signal output line (230) includes a first output line (231) and a second output line (232); The pressure sensor kit (200) also includes a first tail connector (250), a second head connector (260), and a second tail connector (270). The first output line (231) is connected between the pressure sensor (220) and the first tail connector (250). The second output line (232) is connected between the second head connector (260) and the second tail connector (270). The second head connector (260) is connected to the first tail connector (250). The second tail connector (270) is connected to the monitor.

5. The body cavity thermal perfusion assembly for pressure monitoring as described in claim 1, characterized in that, The tube body (110) is provided with a plurality of drainage holes (111), the drainage holes (111) are provided near the head end of the tube body (110), the drainage holes (111) and the drainage channel (110a) are connected in a corresponding manner, and the drainage holes (111) are not provided on the side wall of the tube body (110) corresponding to the pressure measuring sheath channel (110b).

6. The pressure monitoring intracavitary hyperthermic perfusion assembly as described in claim 1, characterized in that, The length and color of the drainage connector (120) and the pressure measuring sheath connector (130) are different.

7. The body cavity thermal perfusion assembly for pressure monitoring as described in claim 1, characterized in that, The tube body (110) has a scale (112) on its surface.

8. The body cavity thermal perfusion assembly for pressure monitoring as described in claim 1, characterized in that, The tube (110) has a blunt end and is a soft, hollow tube structure.

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