Catheter system integrating ventricular peritoneal shunt and tumor intracavity drug delivery

Abstract

The invention discloses a ventricular peritoneal shunt and tumor intracavitary administration integrated catheter system which comprises a liquid storage bag and an adjusting valve box, an adjusting mechanism is arranged in the adjusting valve box, and the adjusting mechanism comprises an air bag, a first arc-shaped plate, a first rubber plate, a second rubber plate, a second arc-shaped plate and an electric cylinder. When an electric cylinder starts to work, a second arc-shaped plate can be driven to move, a second rubber plate is driven to move, the pressure of the second arc-shaped plate can be adjusted again, appropriate adjustment can be conducted according to the change of the intracranial pressure, intracranial cerebrospinal fluid can be drained conveniently, and better infusion treatment can be conducted on intracranial tumors; when an electric cylinder starts to work, a second arc-shaped plate can be driven to move, a second rubber plate is driven to move, the pressure of the second rubber plate can be adjusted again, appropriate adjustment can be conducted according to changes of the intracranial pressure, and drainage of intracranial cerebrospinal fluid is facilitated.

Description

Technical Field

[0001] This invention relates to the field of manufacturing technology of integrated catheter devices for ventriculoperitoneal shunt and intracavitary drug delivery for tumors, and particularly to an integrated catheter system for ventriculoperitoneal shunt and intracavitary drug delivery for tumors. Background Technology

[0002] Ventriculoperitoneal shunt is a common treatment for hydrocephalus. It involves inserting a shunt tube to drain cerebrospinal fluid from the ventricles to the peritoneal cavity, thereby reducing intracranial pressure. Intracavitary chemotherapy, on the other hand, involves directly injecting chemotherapy drugs into the tumor cavity to increase local drug concentration, enhance treatment efficacy, and reduce systemic side effects. By using an integrated catheter system, these two procedures can be combined, allowing for simultaneous cerebrospinal fluid drainage and local tumor chemotherapy through a single catheter system. This simplifies the surgical procedure, reduces patient suffering, and improves treatment outcomes.

[0003] Currently, integrated ventriculoperitoneal shunt and intratumoral drug delivery catheters are used to guide cerebrospinal fluid (CSF) into the peritoneal cavity and for targeted delivery to the tumor during intracranial tumor treatment. However, current procedures require two separate steps, necessitating two surgeries for the patient. This increases surgical and anesthetic risks, as well as medical costs. Furthermore, the ventriculoperitoneal catheter cannot be adjusted according to intracranial pressure during drainage and infusion, reducing drainage and infusion efficiency, thus lowering treatment outcomes and increasing surgical recovery risks. When the CSF drainage tube and tumor delivery tube are integrated, CSF may reflux into the drug reservoir, contaminating the medication and reducing the rate of subsequent treatment.

[0004] Therefore, how to provide an integrated catheter system for ventriculoperitoneal shunt and intracavitary drug delivery is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] One objective of this invention is to provide an integrated catheter system for ventriculoperitoneal shunt and intratumoral drug delivery. By incorporating an adjustment mechanism, the pressure of the cerebrospinal fluid delivered in the second connecting tube can be adjusted to accommodate changes in intracranial pressure, thereby enabling better delivery and addressing the problems mentioned in the background art.

[0006] An integrated catheter system for ventriculoperitoneal shunt and intracavitary tumor drug delivery according to an embodiment of the present invention includes a reservoir and an adjusting valve box. A drug reservoir is installed at the bottom of the inner wall of the reservoir. A second connecting tube is installed on one side of the reservoir. A first connecting tube is installed on one side of the adjusting valve box. Connecting hoses are sleeved at the adjacent ends of the first and second connecting tubes. Fixing rings, sleeved on the first and second connecting tubes, are respectively installed at both ends of the connecting hoses. An adjusting mechanism is provided inside the adjusting valve box, and the adjusting mechanism includes an air bladder and a first arc-shaped... The regulating valve box comprises a plate, a first rubber plate, a second rubber plate, a second arc-shaped plate, and an electric cylinder. An airbag connected to a first connecting pipe is installed on the inner wall of the regulating valve box. A first arc-shaped plate is fixedly installed at the bottom of the inner wall of the regulating valve box. A first rubber plate that fits against the airbag is fixedly installed on one side of the first arc-shaped plate. A second arc-shaped plate is slidably connected to the other side of the bottom of the inner wall of the regulating valve box. A second rubber plate that fits against the airbag is fixedly installed on one side of the second arc-shaped plate. An electric cylinder is fixedly installed on one side of the inner wall of the regulating valve box, and the output shaft of the electric cylinder is close to the second arc-shaped plate.

[0007] As a preferred embodiment of the present invention: a sliding groove is provided at the bottom of the inner wall of the regulating valve box, and a slider fixed to the second arc-shaped plate is slidably connected to the inner wall of the sliding groove.

[0008] As a further preferred embodiment of the present invention: a return spring is fixedly installed on one side of the slider, and the other end of the return spring is fixedly connected to the inner wall of the slide groove.

[0009] As a further preferred embodiment of the present invention: a third connecting tube is fixedly installed on one side of the airbag, and the third connecting tube extends through to the outside of the regulating valve box, and a guide tube is fixedly installed at the end of the third connecting tube located outside the regulating valve box.

[0010] As a further preferred embodiment of the present invention: a drainage tube is installed at one end of the second connecting tube located inside the reservoir, and the drainage tube extends through and out of the reservoir.

[0011] As a further preferred embodiment of the present invention: a ventricular catheter is fixedly installed at one end of the drainage tube outside the reservoir, a valve sleeve is installed on the outer ring of the drainage tube inside the reservoir, and the other end of the drainage tube inside the reservoir is connected to the drug reservoir.

[0012] As a further preferred embodiment of the present invention: a partition is fixedly installed on one side of the inner wall of the valve sleeve, and an annular groove is formed on one side of the partition.

[0013] As a further preferred embodiment of the present invention: an mounting plate is fixedly installed on one side of the inner wall of the valve sleeve, and a connecting rod is inserted and connected to one side of the mounting plate.

[0014] As a further preferred embodiment of the present invention: a limiting plate is fixedly installed at one end of the connecting rod, a baffle is fixedly installed at the other end of the connecting rod, and a rubber plug adapted to the annular groove is fixedly installed on one side of the baffle.

[0015] As a further preferred embodiment of the present invention: a connecting spring is installed at one end of the baffle, the other end of the connecting spring is fixedly connected to the mounting plate, and the connecting spring is interlocked with the connecting rod.

[0016] The beneficial effects of this invention are:

[0017] 1. Through the coordinated operation of the adjustment mechanism and electric cylinder, when the airbag pressure increases, it squeezes the first and second rubber plates. This causes the second arc-shaped plate to move the slider within the groove, compressing the return spring and generating potential energy. Under the influence of this potential energy, a reset action is performed, which is then performed by the slider on the second arc-shaped plate. The second rubber plate also compresses the airbag, thus changing its pressure. When greater pressure adjustment is needed, the electric cylinder starts working, moving the second arc-shaped plate and the second rubber plate, allowing for further pressure adjustment. This enables appropriate adjustments based on changes in intracranial pressure, facilitating drainage of cerebrospinal fluid and better intracranial tumor infusion, thereby improving the patient's recovery rate.

[0018] 2. When the medication passes through the valve sleeve, it compresses the rubber stopper, causing it to move. This movement of the connecting rod within the mounting plate compresses the connecting spring, generating potential energy. As the medication passes through the valve sleeve, it is directly delivered into the drainage tube and then directly to the intracranial tumor via the ventricular catheter. The unidirectional feeding mechanism within the valve sleeve prevents reflux of cerebrospinal fluid in the drainage tube, thus avoiding infection in the patient. This facilitates better drainage of cerebrospinal fluid and accelerates the patient's recovery.

[0019] 3. When medication needs to be delivered to a patient's intracranial tumor, the medication reservoir directly delivers the medication into the drainage tube. The medication passes through a valve on the drainage tube and is then delivered directly into the tube. Once the medication is delivered into the ventricular catheter, it is directly delivered to the intracranial tumor, allowing for targeted drug administration and accelerating the patient's recovery. The valve in the drainage tube allows for one-way drug delivery, preventing cerebrospinal fluid from flowing back into the reservoir from the main drainage tube. This ensures precise delivery of the medication to the intracranial tumor, improving the patient's recovery rate. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 This is a schematic diagram of the overall structure of an integrated catheter system for ventriculoperitoneal shunt and intracavitary drug delivery proposed in this invention.

[0022] Figure 2 This is a schematic cross-sectional view of the reservoir structure of an integrated catheter system for ventriculoperitoneal shunt and intratumoral drug delivery proposed in this invention.

[0023] Figure 3 This is a cross-sectional schematic diagram of the regulating valve box of an integrated catheter system for ventriculoperitoneal shunt and intratumoral drug delivery proposed in this invention.

[0024] Figure 4 This is a schematic diagram of the balloon structure of an integrated catheter system for ventriculoperitoneal shunt and intratumoral drug delivery proposed in this invention.

[0025] Figure 5 This is a schematic diagram of the second arc-shaped plate structure of an integrated catheter system for ventriculoperitoneal shunt and intracavitary drug delivery proposed in this invention.

[0026] Figure 6 This is a schematic cross-sectional view of the valve sleeve of an integrated catheter system for ventriculoperitoneal shunt and intratumoral drug delivery proposed in this invention.

[0027] Figure 7 This is an exploded structural diagram of the inner wall of the valve sleeve of an integrated catheter system for ventriculoperitoneal shunt and intratumoral drug delivery proposed in this invention.

[0028] Figure 8 This is a schematic diagram of the connection hose structure of an integrated catheter system for ventriculoperitoneal shunt and intratumoral drug delivery proposed in this invention.

[0029] The attached diagram shows: 1. Reservoir; 2. Connecting hose; 3. Fixing ring; 4. Adjusting valve box; 401. First arc-shaped plate; 402. First rubber plate; 403. Second rubber plate; 404. Second arc-shaped plate; 405. Sliding block; 406. Slide groove; 407. Return spring; 408. Electric cylinder; 5. Airbag; 6. Guide tube; 7. First connecting tube; 8. Drainage tube; 9. Valve sleeve; 901. Partition; 9011. Annular groove; 902. Baffle; 9021. Rubber plug; 903. Connecting rod; 904. Connecting spring; 905. Mounting plate; 906. Limiting plate; 10. Ventricular catheter; 11. Second connecting tube; 12. Third connecting tube; 13. Drug reservoir. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0031] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the device includes a reservoir 1 and a regulating valve box 4. A drug reservoir 13 is installed at the bottom of the inner wall of the reservoir 1. A second connecting pipe 11 is installed on one side of the reservoir 1. A first connecting pipe 7 is installed on one side of the regulating valve box 4. A connecting hose 2 is sleeved on the adjacent ends of the first connecting pipe 7 and the second connecting pipe 11. Fixing rings 3, which are sleeved on the first connecting pipe 7 and the second connecting pipe 11, are respectively installed at both ends of the connecting hose 2. The regulating valve box 4 is equipped with an adjusting mechanism, which includes an airbag 5, a first arc-shaped plate 401, a first rubber plate 402, a second rubber plate 403, and a second arc-shaped plate. 404 and electric cylinder 408, an airbag 5 connected to the first connecting pipe 7 is installed on the inner wall of the regulating valve box 4, a first arc plate 401 is fixedly installed on the bottom of the inner wall of the regulating valve box 4, a first rubber plate 402 that fits against the airbag 5 is fixedly installed on one side of the first arc plate 401, a second arc plate 404 is slidably connected to the other side of the bottom of the inner wall of the regulating valve box 4, a second rubber plate 403 that fits against the airbag 5 is fixedly installed on one side of the second arc plate 404, an electric cylinder 408 is fixedly installed on one side of the inner wall of the regulating valve box 4, and the output shaft of the electric cylinder 408 is close to the second arc plate 404;

[0032] When cerebrospinal fluid is delivered through the first connecting tube 7, the intracranial pressure changes the delivery rate within the tube and affects the internal pressure of the airbag 5. This inflates the airbag 5, compressing the first rubber plate 402 and the second rubber plate 403. Since the first rubber plate 402 is fixed to the first arc-shaped plate 401, this compresses the second arc-shaped plate 404, causing it to move. This, in turn, moves the slider 405 within the groove 406, compressing the return spring 407 and generating potential energy. Under the influence of this potential energy, the return spring 407 returns to its original position. The movement will cause the second arc plate 404 to perform a reset action via the slider 405, and will also cause the airbag 5 to be squeezed by the second rubber plate 403, thereby allowing for appropriate adjustment of its pressure. If the reset spring 407 fails to adjust, the electric cylinder 408 will be activated to move the second arc plate 404 and the second rubber plate 403, allowing for further adjustment of its pressure. This allows for appropriate adjustment based on changes in intracranial pressure, facilitating drainage of intracranial cerebrospinal fluid and better infusion treatment of intracranial tumors, thereby improving the patient's recovery rate.

[0033] refer to Figure 1 , Figure 3 , Figure 4 , Figure 5 As shown, a groove 406 is provided at the bottom of the inner wall of the regulating valve box 4. A slider 405 fixed to the second arc plate 404 is slidably connected to the inner wall of the groove 406. A return spring 407 is fixedly installed on one side of the slider 405. The other end of the return spring 407 is fixedly connected to the inner wall of the groove 406. A third connecting pipe 12 is fixedly installed on one side of the airbag 5. The third connecting pipe 12 extends through to the outside of the regulating valve box 4. A guide pipe 6 is fixedly installed at the end of the third connecting pipe 12 located outside the regulating valve box 4.

[0034] When the second arc plate 404 moves, it drives the slider 405 to move within the groove 406, which in turn compresses the return spring 407, generating potential energy. Under the action of this potential energy, the return spring 407 performs a reset action, which in turn drives the slider 405 to perform a reset action within the groove 406, and drives the second arc plate 404 to move. This, in turn, drives the second rubber plate 403 to move, and compresses the airbag 5, thereby regulating its pressure and changing the delivery pressure within the first connecting tube 7. This changes the intracranial pressure and regulates the pressure within the first connecting tube 7, thus facilitating better drainage of intracranial cerebrospinal fluid.

[0035] refer to Figure 1 , Figure 2 , Figure 4 , Figure 6 , Figure 7 As shown, a drainage tube 8 is installed at one end of the second connecting tube 11 inside the reservoir 1, and the drainage tube 8 penetrates and extends to the outside of the reservoir 1. A ventriculoperitoneal catheter 10 is fixedly installed at the end of the drainage tube 8 outside the reservoir 1. A valve sleeve 9 is installed on the outer ring of the drainage tube 8 inside the reservoir 1. The end of the drainage tube 8 inside the reservoir 1 is connected to the drug reservoir 13. A partition 901 is fixedly installed on one side of the inner wall of the valve sleeve 9. An annular groove 9011 is formed on one side of the partition 901. A ventricular catheter 10 is fixedly installed on one side of the inner wall of the valve sleeve 9. There is a mounting plate 905, and a connecting rod 903 is inserted and connected to one side of the mounting plate 905. A limiting plate 906 is fixedly installed at one end of the connecting rod 903, and a baffle 902 is fixedly installed at the other end of the connecting rod 903. A rubber plug 9021 that matches the annular groove 9011 is fixedly installed on one side of the baffle 902. A connecting spring 904 is installed at one end of the baffle 902. The other end of the connecting spring 904 is fixedly connected to the mounting plate 905, and the connecting spring 904 is inserted and connected to the connecting rod 903.

[0036] When cerebrospinal fluid is transported along the ventricular catheter 10 into the drainage tube 8, it is also transported into the second connecting tube 11. Because the second connecting tube 11 is connected to the first connecting tube 7 through the connecting hose 2, it can transport cerebrospinal fluid into the first connecting tube 7, and then into the abdominal cavity through the drainage tube 6. When it is necessary to administer medication to the tumor, the medication in the reservoir 13 is directly transported into the drainage tube 8 through the valve sleeve 9. When the medication is transported, it passes through the partition 901 in the valve sleeve 9 and squeezes the rubber stopper 9021, causing it to move. This will also drive the connecting rod 903 to move within the mounting plate 905, and squeeze the connecting spring 904 to generate potential energy. When the medication passes through the valve sleeve 9, it can be directly transported into the drainage tube 8 and then directly delivered to the patient's intracranial tumor through the ventricular catheter 10. It can also deliver the medication in a directional manner. By setting a one-way delivery in the valve sleeve 9, it is possible to prevent the cerebrospinal fluid in the drainage tube 8 from flowing back and leaking into the reservoir 13.

[0037] Working principle: When cerebrospinal fluid (CSF) needs to be drained, the CSF is transported along the ventricular catheter 10 into the drainage tube 8 and then into the second connecting tube 11. Since the second connecting tube 11 is connected to the first connecting tube 7 via a connecting hose 2, it can transport the CSF into the first connecting tube 7, and then through the drainage tube 6 into the abdominal cavity. During CSF drainage, the intracranial pressure changes. When the first connecting tube 7 is transporting CSF, the intracranial pressure changes the transport rate within the first connecting tube 7, affecting the internal pressure of the airbag 5. This causes the airbag 5 to expand, compressing the first rubber plate 402 and the second rubber plate 403. Because the first rubber plate 402 is fixed to the first arc-shaped plate 401, this compression causes the second arc-shaped plate 404 to move. The sliding block 405 moves within the groove 406, compressing the return spring 407 and generating potential energy. Under this potential energy, the return spring 407 performs a reset action, which in turn drives the second arc plate 404 to perform a reset action via the sliding block 405. The second rubber plate 403 then compresses the airbag 5, allowing for appropriate pressure adjustment. If the return spring 407 fails to adjust, the electric cylinder 408 is activated, moving the second arc plate 404 and the second rubber plate 403, allowing for further pressure adjustment. This allows for appropriate adjustment based on changes in intracranial pressure, facilitating drainage of cerebrospinal fluid and better intracranial tumor infusion, thereby improving the patient's recovery rate.

[0038] When medication needs to be delivered to a patient's intracranial tumor, the medication reservoir 13 in the reservoir 1 delivers the medication directly into the drainage tube 10. At this time, the medication passes through the valve sleeve 9 on the drainage tube 8 and can be directly delivered into the drainage tube 8. When the medication is delivered into the ventricular catheter 8, it will be directly delivered to the patient's intracranial tumor, enabling targeted drug delivery to the patient's intracranial tumor. This allows for targeted drug delivery and rehabilitation treatment of the patient's intracranial tumor, thereby accelerating the patient's recovery rate. By setting the valve sleeve 9 in the drainage tube 8, the medication delivered in the drainage tube 8 can be delivered unidirectionally, thereby preventing cerebrospinal fluid from flowing back from the large drainage tube 8 into the medication reservoir 13.

[0039] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A ventriculoperitoneal shunt and intracavitary tumor drug delivery integrated catheter system, characterized in that, The utility model provides a kind of medicine injection device, including liquid storage bag (1) and regulating valve box (4), the inner wall bottom of the liquid storage bag (1) is equipped with medicine storage bag (13), one side of the liquid storage bag (1) is equipped with second connecting pipe (11), one side of the regulating valve box (4) is equipped with first connecting pipe (7), the end of the first connecting pipe (7) and the second connecting pipe (11) is close to each other is equipped with connecting hose (2) set, the both ends of the connecting hose (2) are respectively equipped with the fixed ring (3) of the first connecting pipe (7) and the second connecting pipe (11) set, the inside of the regulating valve box (4) is equipped with adjusting mechanism, and adjusting mechanism includes air bag (5), first arc plate (401), first rubber plate (402), second rubber plate (403), second arc plate (404) and electric cylinder (408), the inner wall of the regulating valve box (4) is equipped with air bag (5) connected with the first connecting pipe (7), the inner wall bottom of the regulating valve box (4) is fixedly equipped with first arc plate (401), one side of the first arc plate (401) is fixedly equipped with the first rubber plate (402) that air bag (5) is pasted, the inner wall bottom of the regulating valve box (4) is slidably connected with second arc plate (404) on the other side, one side of the second arc plate (404) is fixedly equipped with the second rubber plate (403) that air bag (5) is pasted, the inner wall of the regulating valve box (4) one side is fixedly equipped with electric cylinder (408), and the output shaft of the electric cylinder (408) is close to second arc plate (404).

2. The shunt and intracavity drug delivery system according to claim 1, wherein, The inner wall bottom of the regulating valve box (4) is equipped with sliding groove (406), the inner wall of the sliding groove (406) is slidably connected with the sliding block (405) fixed with second arc plate (404).

3. The shunt and intracavity drug delivery system of claim 2, wherein the catheter is a ventricular catheter. One side of the sliding block (405) is fixedly equipped with return spring (407), and the other end of the return spring (407) is fixedly connected with the inner wall of the sliding groove (406).

4. The shunt and intracavity drug delivery system of claim 1, wherein, One side of the air bag (5) is fixedly equipped with third connecting pipe (12), and the third connecting pipe (12) extends to outside the regulating valve box (4), and the end of the third connecting pipe (12) outside the regulating valve box (4) is fixedly equipped with flow guide pipe (6).

5. The ventricular peritoneal shunt and intracavitary tumor chemotherapy integrated catheter system according to claim 1, wherein, One end of the second connecting pipe (11) in the liquid storage bag (1) is equipped with drainage tube (8), and the drainage tube (8) extends to outside the liquid storage bag (1).

6. The shunt and intracavity tumor drug delivery integrated catheter system according to claim 5, wherein, The end of the drainage tube (8) outside the liquid storage bag (1) is fixedly equipped with ventricular catheter (10), the outer ring of the drainage tube (8) in the liquid storage bag (1) is equipped with valve sleeve (9), and one end of the drainage tube (8) in the liquid storage bag (1) is connected with the medicine storage bag (13).

7. The shunt and intracavity tumor drug delivery integrated catheter system according to claim 6, wherein, One side of the inner wall of the valve sleeve (9) is fixedly equipped with partition (901), and one side of the partition (901) is equipped with annular groove (9011).

8. The shunt and intracavity tumor drug delivery integrated catheter system according to claim 7, wherein, One side of the inner wall of the valve sleeve (9) is fixedly equipped with mounting plate (905), and one side of the mounting plate (905) is connected with connecting rod (903).

9. The shunt and intracavity tumor drug delivery integrated catheter system according to claim 8, wherein, One end of the connecting rod (903) is fixedly installed with a limiting plate (906), the other end of the connecting rod (903) is fixedly installed with a baffle (902), one side of the baffle (902) is fixedly installed with a rubber plug (9021) matched with the annular groove (9011).

10. The shunt and intracavity tumor drug delivery integrated catheter system according to claim 9, wherein, One end of the baffle (902) is installed with a connecting spring (904), the other end of the connecting spring (904) is fixedly connected with a mounting plate (905), and the connecting spring (904) is connected with the connecting rod (903).

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