An abdominal cavity infusion apparatus

Abstract

This invention discloses an intraperitoneal infusion device, comprising: a hyperthermic chemotherapy perfusion machine; an infusion assembly including a connecting catheter connected to the hyperthermic chemotherapy perfusion machine, the connecting catheter being detachably connected to a drainage catheter, the drainage catheter being inserted into the abdominal cavity via a guidewire; a catheter positioning assembly including an annular mounting band tightened on the abdominal cavity, the annular mounting band having a central clearance hole on its side near the abdominal cavity, the inner side of the central clearance hole being fitted with an inner fitting for positioning the drainage catheter; and a catheter adjustment assembly for adjusting the offset direction of the drainage catheter, including an adaptive adjustment element mounted on the top surface of the annular mounting band, the top of the adaptive adjustment element extending to the drainage catheter, and the lower end of the adaptive adjustment element having a precision pressure measuring element that fits against the abdomen. This invention can adjust the state of the infusion tube in real time when the patient turns over, thereby ensuring stability during the infusion process.

Description

Technical Field

[0001] This invention relates to the field of intraperitoneal infusion, and in particular to an intraperitoneal infusion device. Background Technology

[0002] Intraperitoneal infusion is a treatment technique that delivers drugs directly into the peritoneal cavity. The core principle is to bypass the peritoneal-plasma barrier and take advantage of the heat sensitivity of tumor cells by precisely heating the drug solution to 43°C. Since normal cells can tolerate this temperature, while tumor cells are selectively killed, this achieves precise targeting and allows the drug to reach extremely high concentrations in the lesion area.

[0003] During infusion, once the medication is fully injected into the patient's abdominal cavity, the patient's position needs to be constantly changed to maintain uniformity throughout the cavity. For example, the patient may need to change from a prone position to a left lateral position or vice versa. Since the medication needs to be drained back into the abdominal cavity, the infusion tubing is not yet removed. This tubing is subject to significant bending or pulling, which can easily lead to it coming off the infusion site. Therefore, current technology uses tape or patches to temporarily fix the infusion tubing in the patient's abdomen. While this achieves temporary fixation, it still cannot guarantee that the tubing will not be pulled by the force of turning over. The patient's condition and infusion pressure need to be monitored constantly.

[0004] Therefore, the purpose of this case is to provide an intraperitoneal infusion device that can monitor intraperitoneal pressure in real time and adjust the state of the infusion tube in real time when the patient turns over, thereby ensuring the stability of the infusion process. Summary of the Invention

[0005] This invention provides an intraperitoneal infusion device that can effectively solve the above-mentioned problems.

[0006] This invention is implemented as follows: An intraperitoneal infusion device, comprising: A thermochemotherapy perfusion machine, wherein the thermochemotherapy perfusion machine is equipped with a flow monitoring module for monitoring the infusion flow rate and a pressure monitoring module for monitoring the intra-abdominal pressure; An infusion assembly for connecting a peritoneal cavity to a hyperthermic chemotherapy perfusion machine, comprising a connecting catheter connected to the hyperthermic chemotherapy perfusion machine, the connecting catheter being detachably connected to a drainage catheter, the drainage catheter being inserted into the peritoneal cavity via a guidewire; A catheter positioning assembly includes an annular mounting band that is tightened on the abdominal cavity. The annular mounting band has a central clearance hole on the side near the abdominal cavity, and an inner fitting for positioning the drainage catheter is embedded inside the central clearance hole. The catheter adjustment assembly, used to adjust the offset direction of the drainage catheter, includes an adaptive adjustment element mounted on the top surface of the annular mounting band. The top of the adaptive adjustment element extends and connects to the drainage catheter. When the patient turns over, causing the drainage catheter to tilt in a certain direction, the adaptive adjustment element senses the tilt and pulls the drainage catheter to the opposite side of the tilt. The lower end of the adaptive adjustment element is provided with a precision pressure measuring element that fits against the abdomen. When the adaptive adjustment element is activated, it squeezes the precision pressure measuring element to measure the abdominal cavity pressure.

[0007] As a further improvement, the annular mounting band includes an upper positioning piece that fits against the patient's abdomen, one side of which is connected to a lower positioning piece located on the patient's back via an elastic band, and the other side of which is connected to the lower positioning piece via Velcro.

[0008] As a further improvement, the upper surface of the upper positioning piece is provided with a content cavity, and the content cavity is used to house an adaptive adjustment element.

[0009] As a further improvement, the lower positioning plate is provided with several ventilation holes.

[0010] As a further improvement, the inner fitting includes an outer ring that mates with the drainage catheter. The inner side of the outer ring is provided with a temperature sensing ring for measuring the temperature of the drug solution. Both the front and rear ends of the outer ring are provided with tightening rings. The side of the tightening ring closest to the outer ring is flipped over to tighten the outer ring and the drainage catheter.

[0011] As a further improvement, the adaptive adjuster includes a sensor disposed within an annular mounting band, the sensor being electrically connected to two traction members that extend to the drainage catheter. When the sensor senses that the patient is lying on their side, the sensor sends a signal to the traction members, causing the traction members to pull the drainage catheter to deflect in the opposite direction of the tilt.

[0012] As a further improvement, the sensing element is an angular velocity sensor, which is electrically connected to two traction elements simultaneously, and drives the traction element in the corresponding direction according to the angular offset information sensed by the angular velocity sensor.

[0013] As a further improvement, the traction component includes a small fan disposed in the installation area, the outlet end of the small fan being provided with an outer bag, the outer bag being connected to a connecting airway, the end of the connecting airway being connected to a drainage conduit.

[0014] As a further improvement, the precision pressure measuring device includes an inner bladder communicating with the outer bladder. A piezoelectric pad is connected to the lower end of the inner bladder, and a muscle contraction sensor is spaced apart at the lower end of the piezoelectric pad. The muscle contraction sensor is embedded inside the annular mounting band, and the piezoelectric pad contacts the muscle contraction sensor after the inner bladder is inflated.

[0015] The beneficial effects of this invention are: This invention utilizes a catheter positioning component. A ring-shaped installation band is placed around the patient's abdomen, similar to a belt, and a central clearance hole is located in the middle of the abdomen. This design limits and supports the drainage catheter, preventing it from bending when the patient is lying on their side. An inner fitting is located in the center of the central clearance hole, which not only provides rigid support for the drainage catheter but also allows for temperature monitoring of the medication within the catheter. This eliminates the need for additional temperature monitoring structures on the catheter itself, resulting in more accurate, fixed-point temperature monitoring data.

[0016] This invention provides an adaptive adjustment component on the inner side of the annular mounting band, extending to the position of the drainage catheter. The adaptive adjustment component itself has an angle sensing function, which can detect which side the patient turns to when turning over. This allows the drainage catheter to be pulled in the opposite direction after the patient turns over, making it less likely to tilt or fall out. It can also maintain stability during reflux and prevent the catheter from dislodging when turning over. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional structural schematic diagram of the present invention (first angle).

[0019] Figure 2 This is a three-dimensional structural schematic diagram of the present invention (second angle).

[0020] Figure 3 This is a schematic diagram of the structure of the catheter positioning component and the catheter adjustment component of the present invention.

[0021] Figure 4 This is the present invention. Figure 3 Top view.

[0022] Figure 5 This is the present invention. Figure 4Cross-sectional view at point AA.

[0023] Figure 6 This is a three-dimensional structural schematic diagram (first perspective) of the catheter adjustment component of the present invention.

[0024] Figure 7 This is a three-dimensional structural schematic diagram (second perspective) of the catheter adjustment component of the present invention.

[0025] In the picture: Thermochemotherapy perfusion machine 10, infusion assembly 20, connecting catheter 21, drainage catheter 22, catheter positioning assembly 30, annular mounting band 31, upper positioning plate 311, inner cavity 3111, lower positioning plate 312, inner fitting part 32, outer ring 321, temperature sensing ring 322, tightening ring 323, catheter adjustment assembly 40, adaptive adjustment part 41, sensing part 411, traction part 412, small fan 4121, outer bag 4122, connecting airway 4123, precision pressure measuring part 42, inner bag 421, piezoelectric piece 422, muscle contraction sensor 423. Detailed Implementation

[0026] All embodiments of the present invention are intended to fall within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0027] In the description of this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating that the purpose, technical solution, and advantages of the method are clearer. The technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without inventive effort indicate or imply the relative importance of the indicated technical features. Therefore, features defined with "first" and "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] Reference Figures 1-7As shown, an intraperitoneal infusion device includes: a hyperthermic chemotherapy perfusion machine 10, which is equipped with a flow monitoring module for monitoring the infusion flow rate and a pressure monitoring module for monitoring the intraperitoneal pressure; an infusion assembly 20 for connecting the intraperitoneal cavity to the hyperthermic chemotherapy perfusion machine 10, including a connecting catheter 21 connected to the hyperthermic chemotherapy perfusion machine 10, the connecting catheter 21 being detachably connected to a drainage catheter 22, the drainage catheter 22 being inserted into the intraperitoneal cavity via a guidewire; and a catheter positioning assembly 30, including an annular mounting band 31 tightened on the intraperitoneal cavity, the annular mounting band 31 having a central clearance hole on its side near the intraperitoneal cavity, the inner side of the central clearance hole being fitted with a drainage catheter. The internal fitting 32 is positioned 22; the catheter adjustment assembly 40 is used to adjust the offset direction of the drainage catheter 22, including an adaptive adjustment member 41 installed on the top surface of the annular mounting band 31. The top of the adaptive adjustment member 41 extends and connects to the drainage catheter 22. When the patient turns over and causes the drainage catheter 22 to tilt in a certain direction, the adaptive adjustment member 41 senses the tilt and pulls the drainage catheter 22 to the opposite side of the tilt. The lower end of the adaptive adjustment member 41 is provided with a precision pressure measuring member 42 that fits against the abdomen. When the adaptive adjustment member 41 is activated, the adaptive adjustment member 41 squeezes the precision pressure measuring member 42 to measure the abdominal pressure.

[0029] In this embodiment, the connecting catheter 21 is configured in two sections, and the drainage catheter 22 is also configured in two sections, thereby separating the infusion and return. In other embodiments, a single tube may be used, and the infusion method may be determined according to the different models of thermochemotherapy perfusion machines 10.

[0030] The flow monitoring module and pressure monitoring module in this embodiment are both existing technologies and will not be described in detail in this case.

[0031] This invention utilizes a catheter positioning component 30, which, through a ring-shaped mounting strap 31, binds a belt-like structure to the patient's abdomen. A central clearance hole is positioned in the middle of the abdomen to limit the drainage catheter 22, providing support and preventing bending when the patient is lying on their side. An inner fitting 32 is located in the center of the central clearance hole, not only providing rigid support for the drainage catheter 22 but also enabling temperature monitoring of the medication within the catheter. This eliminates the need for additional temperature monitoring structures on the catheter itself, resulting in more accurate, fixed-point temperature monitoring data.

[0032] Because of the differences in body shape among patients, the shape of the annular mounting band 31 is not fixed. The annular mounting band 31 is divided into two parts. Specifically, the annular mounting band 31 includes an upper positioning piece 311 that fits against the patient's abdomen. One side of the upper positioning piece 311 is connected to a lower positioning piece 312 located on the patient's back via an elastic band. The other side of the upper positioning piece 311 is connected to the lower positioning piece 312 via Velcro. One part is the upper positioning piece 311 used to install the catheter adjustment assembly 40, while the other part is the lower positioning piece 312 that provides binding force to the upper positioning piece 311. The lower positioning piece 312 and the upper positioning piece 311 are connected by an elastic band and Velcro, thereby enabling adaptation for patients of various body shapes.

[0033] In order to make full room for the adaptive adjustment member 41, the thickness of the upper positioning piece 311 is much greater than that of the lower positioning piece 312, so that a content cavity 3111 is provided on the upper surface of the upper positioning piece 311, and the adaptive adjustment member 41 is placed inside the content cavity 3111.

[0034] Since no other structures are needed at the lower positioning piece 312, several ventilation holes are provided on the lower positioning piece 312 to prevent the patient's back from overheating.

[0035] If the drainage tube 22 is limited only by the central clearance hole, the swaying amplitude of the drainage tube 22 may be large. Therefore, the inner fitting 32 in this embodiment includes an outer ring 321 that mates with the drainage tube 22. A temperature sensing ring 322 for measuring the temperature of the medicine solution is provided on the inner side of the outer ring 321. A tightening ring 323 is provided at both the front and rear ends of the outer ring 321. The tightening ring 323 is flipped on the side near the outer ring 321 and then tightens the outer ring 321 and the drainage tube 22. This is achieved by the central clearance hole. An outer ring 321 is provided on the inner side of the hole to apply a restrictive force to the drainage catheter 22. A tightening ring 323 is also provided at the upper and lower ends of the outer ring 321. The tightening ring 323 can be flipped to one end of the outer ring 321 to improve the fastening effect on the drainage catheter 22. The temperature sensing ring 322 is a temperature sensing component, which can monitor the temperature of the drug solution flowing into the abdominal cavity. Compared with the drug solution temperature sensing structure built into the thermochemotherapy perfusion machine 10, it can monitor the output temperature of the drug solution and the temperature when it enters the abdominal cavity at all times and make timely adjustments.

[0036] In this embodiment, an adaptive adjustment member 41 is provided on the inner side of the annular mounting band 31, and the adaptive adjustment member 41 extends to the position of the drainage tube 22. The adaptive adjustment member 41 itself has an angle sensing function, so it can detect which side the patient turns to when turning over. It can then pull the drainage tube 22 in the opposite direction after the patient turns over, so that the drainage tube 22 is not easy to tilt or fall out, can remain stable during reflux, and can also prevent the tube from falling out when turning over.

[0037] When adjusting the position of the drainage catheter 22, the adaptive adjustment component 41 needs to sense which side the drainage catheter 22 is shifting to. Therefore, the adaptive adjustment component 41 in this embodiment includes a sensor 411 disposed within the annular mounting band 31. The sensor 411 is electrically connected to two traction components 412, which extend to the drainage catheter 22. When the sensor 411 senses that the patient is lying on their side, the sensor 411 sends a signal to the traction component 412, causing the traction component 412 to pull the drainage catheter 22 to shift to the opposite side of the tilt. The drainage catheter 22 is provided with a sensor 411 for sensing changes in the patient's body position. When the sensor 411 senses a change in body position, it triggers the traction component 412 in the corresponding direction to move, thereby enabling the traction component 412 to automatically and adaptively adjust the drainage catheter 22 according to changes in the patient's body position, thereby reducing the possibility of infection during drug infusion and improving infusion safety.

[0038] In this embodiment, the sensing element 411 is an angular velocity sensor, which is electrically connected to two traction elements 412. The traction element 412 in the corresponding direction is driven according to the angular offset information sensed by the angular velocity sensor. The two sensing elements 411 sense the same tilt angle and are both electrically connected to the traction element 412. When the patient tilts to one side, both sensing elements 411 will send a start signal to the traction element 412 on the opposite side.

[0039] During the traction process, the traction component 412 includes a small fan 4121 installed in the installation area. An outer bag 4122 is provided on the air outlet end of the small fan 4121. The outer bag 4122 is connected to the connecting airway 4123. The end of the connecting airway 4123 is connected to the drainage conduit 22. The present invention uses a combination of a small fan 4121 and an outer bag 4122. The small fan 4121 inflates the outer bag 4122, thereby allowing the inflated outer bag 4122 to pull the drainage conduit 22, which is about to droop, to ensure the straightness of the drainage conduit 22. The outer bag 4122 is also provided with a pressure relief valve. The pressure relief principle is existing technology and will not be described in detail here. It should be emphasized that the connecting airway 4123 is a ring-shaped hook structure. In order to prevent it from falling off the drainage conduit 22, its end is fixed to the drainage conduit 22 by adhesive during installation.

[0040] When the patient's position changes, the medication flows within the abdominal cavity, and the intra-abdominal pressure may change abruptly. Therefore, more precise monitoring of the patient's intra-abdominal pressure is crucial. In this embodiment, the precision pressure measuring device 42 includes an inner pouch 421 communicating with the outer pouch 4122. A piezoelectric element 422 is connected to the lower end of the inner pouch 421. Muscle contraction sensors 423 are spaced apart at the lower end of the piezoelectric element 422 and are embedded inside the annular mounting band 31. The piezoelectric element 422... After the inner sac 421 is inflated, it comes into contact with the muscle contraction sensor 423. The lower end of the outer sac 4122 is also provided with a precision pressure measuring element 42. The inner sac 421 of the precision pressure measuring element 42 is connected to the outer sac 4122, so that when the outer sac 4122 is inflated, the inner sac 421 will also be inflated, so that the piezoelectric piece 422 at the lower end of the inner sac 421 comes into contact with the muscle contraction sensor 423, so that the muscle contraction sensor 423 is in close contact with the patient's abdomen, and more accurate intra-abdominal pressure monitoring can be performed on patients who have changed positions.

[0041] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. An intraperitoneal infusion device, characterized in that, include: Thermochemotherapy perfusion machine (10) is provided with a flow monitoring module for monitoring the infusion flow rate and a pressure monitoring module for monitoring the intra-abdominal pressure. An infusion assembly (20) for connecting the peritoneal cavity to a hyperthermic chemotherapy infusion machine (10) includes a connecting catheter (21) connected to the hyperthermic chemotherapy infusion machine (10), the connecting catheter (21) being detachably connected to a drainage catheter (22), the drainage catheter (22) being inserted into the peritoneal cavity via a guidewire; The catheter positioning assembly (30) includes an annular mounting band (31) that is tightened on the abdominal cavity. The annular mounting band (31) has a central relief hole on the side near the abdominal cavity. An inner fitting (32) for positioning the drainage catheter (22) is embedded inside the central relief hole. The catheter adjustment assembly (40) is used to adjust the offset direction of the drainage catheter (22). It includes an adaptive adjustment element (41) installed on the top surface of the annular mounting band (31). The top of the adaptive adjustment element (41) extends to the drainage catheter (22). When the patient turns over and causes the drainage catheter (22) to tilt in a certain direction, the adaptive adjustment element (41) senses the tilt and pulls the drainage catheter (22) to the opposite side of the tilt. The lower end of the adaptive adjustment element (41) is provided with a precision pressure measuring element (42) that fits against the abdomen. When the adaptive adjustment element (41) is activated, the adaptive adjustment element (41) squeezes the precision pressure measuring element (42) so that the precision pressure measuring element (42) measures the abdominal cavity pressure.

2. The intraperitoneal infusion device according to claim 1, characterized in that, The annular mounting band (31) includes an upper positioning piece (311) that fits onto the patient's abdomen. One side of the upper positioning piece (311) is connected to a lower positioning piece (312) located on the patient's back via an elastic band. The other side of the upper positioning piece (311) is connected to the lower positioning piece (312) via Velcro.

3. The intraperitoneal infusion device according to claim 2, characterized in that, The upper surface of the upper positioning piece (311) is provided with a content cavity (3111), and the content cavity (3111) is used to set an adaptive adjustment member (41).

4. The intraperitoneal infusion device according to claim 2, characterized in that, The lower positioning piece (312) has several ventilation holes.

5. The intraperitoneal infusion device according to claim 1, characterized in that, The inner fitting (32) includes an outer ring (321) that mates with the drainage tube (22). The inner side of the outer ring (321) is provided with a temperature sensing ring (322) for measuring the temperature of the medicine solution. The front and rear ends of the outer ring (321) are provided with tightening rings (323). The side of the tightening ring (323) close to the outer ring (321) is flipped and tightens the outer ring (321) and the drainage tube (22).

6. The intraperitoneal infusion device according to claim 1, characterized in that, The adaptive adjustment element (41) includes a sensor (411) disposed within an annular mounting band (31), the sensor (411) being electrically connected to two traction elements (412) extending to the drainage catheter (22). When the sensor (411) senses that the patient is lying on their side, the sensor (411) sends a signal to the traction elements (412) to cause the traction elements (412) to pull the drainage catheter (22) to deflect to the opposite side of the tilt.

7. The intraperitoneal infusion device according to claim 6, characterized in that, The sensing element (411) is an angular velocity sensor, which is electrically connected to two traction elements (412) at the same time. The traction element (412) in the corresponding direction is driven according to the angular offset information sensed by the angular velocity sensor.

8. The intraperitoneal infusion device according to claim 6, characterized in that, The traction component (412) includes a small fan (4121) disposed in the installation area. The small fan (4121) has an outer bag (4122) disposed on its air outlet end. The outer bag (4122) is connected to a connecting airway (4123). The end of the connecting airway (4123) is connected to a drainage conduit (22).

9. The intraperitoneal infusion device according to claim 8, characterized in that, The precision pressure measuring component (42) includes an inner bag (421) communicating with the outer bag (4122). The lower end of the inner bag (421) is connected to a piezoelectric piece (422). The lower end of the piezoelectric piece (422) is provided with a muscle contraction sensor (423) at intervals. The muscle contraction sensor (423) is embedded inside the annular mounting band (31). The piezoelectric piece (422) contacts the muscle contraction sensor (423) after the inner bag (421) is filled.

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