Bladder perfusion chemotherapy device

Abstract

The utility model discloses a bladder perfusion chemotherapy device which comprises a port body and a perfusion tube, one end of the perfusion tube is connected with the port body, the other end of the perfusion tube is provided with a liquid outlet section of an elastic structure, the liquid outlet section is in a bent shape without external force, one side of the liquid outlet section is provided with a perfusion hole, and after the perfusion tube extends into the bladder, the perfusion tube is connected with the port body. One side, facing the filling hole, of the liquid outlet section is automatically bent; the infusion tube is embedded under the skin in vivo, can be repeatedly used, does not need to be inserted from the urethra, avoids intubation pain of a patient, the front end of the infusion tube is arranged to be the liquid outlet section of the elastic bent structure, the infusion hole is formed in the bent side, after the infusion tube extends into the bladder, the liquid outlet port cannot make contact with the wall of the bladder, and the infusion tube is convenient to use. The curved surface of the bent end slightly stimulates the bladder wall, the comfort degree of perfusion chemotherapy of a patient is greatly improved, the structure is simple, surgical operation is easy, and the chemotherapy medicine perfusion efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a bladder instillation chemotherapy device. Background Art

[0002] Intravesical chemotherapy is a treatment for bladder cancer that delivers chemotherapy drugs directly into the bladder, achieving a local anti-tumor effect. This treatment is primarily used to treat superficial bladder cancer (non-muscle invasive bladder cancer) or prevent recurrence. Currently, intravesical chemotherapy is administered via a catheter inserted through the urethra into the bladder.

[0003] For example, patent application number CN201821248923.9 discloses an integrated bladder infusion chemotherapy device, including an injection device, a tee, a chemotherapy infusion tube and a medication dispensing tee. The front injection port of the injection device is connected to the tee, the front interface of the tee is connected to the water inlet of the first one-way valve, the front water outlet of the first one-way valve is connected to the chemotherapy infusion tube, the chemotherapy infusion tube is 30-35 cm long and 3-4 mm in diameter, and has an infusion side hole at the front end, the side end interface of the tee is connected to the water outlet of the second one-way valve, the water inlet of the second one-way valve is connected to the medication dispensing tee, and the other two interfaces of the medication dispensing tee are respectively connected to the first medication dispensing tube and the second medication dispensing tube and are respectively provided with puncture needles.

[0004] Before each instillation treatment, an instillation tube needs to be inserted into the bladder through the urethra. The instillation process causes great pain to the patient, and the instillation tube is a straight tube, which easily irritates the bladder wall after entering the bladder. Therefore, this application proposes a bladder instillation chemotherapy device to solve the above problems. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a bladder infusion chemotherapy device which avoids irritation to the bladder wall.

[0006] In order to solve the above technical problems, the utility model includes a port body and an infusion tube, one end of the infusion tube is connected to the port body, and the other end of the infusion tube is provided with a liquid outlet section with an elastic structure. The liquid outlet section is in a curved shape when not subject to external force, and an infusion hole is provided on one side of the liquid outlet section. The end of the liquid outlet section of the infusion tube has an opening.

[0007] Preferably, after the irrigation tube is inserted into the bladder, the liquid outlet section automatically bends toward the side of the irrigation hole.

[0008] Preferably, the liquid outlet section is spirally curved and the circumferential bending angle is greater than 360°.

[0009] Preferably, the perfusion holes are provided in plurality and are arranged at equal intervals.

[0010] Preferably, the front end of the liquid outlet section is a rounded structure.

[0011] Preferably, an outlet pipe is provided on the port body, and the perfusion pipe is interference-connected with the outlet pipe.

[0012] Preferably, it further comprises a fixing sleeve, which is arranged on the outside of the outlet pipe and presses the perfusion tube tightly.

[0013] Preferably, a raised ring is provided on the outer side of the outlet pipe, and a matching concave arc ring is provided on the inner side wall of the fixing sleeve. When the fixing sleeve is sleeved on the outer side of the outlet pipe, the raised ring is embedded in the concave arc ring.

[0014] Preferably, the outlet pipe is provided with an external thread on the outer side of the portion between the raised ring and the port.

[0015] The beneficial effects of the utility model are as follows: the utility model is pre-buried in the body when in use and is reusable, and does not require urethral intubation, thereby avoiding the pain of intubation for patients; the front end of the infusion tube is arranged as a liquid outlet section with an elastic curved structure, and an infusion hole is arranged on the curved side; after the infusion tube is inserted into the bladder, the liquid outlet port does not contact the bladder wall, and the curved surface of the curved end has a lighter stimulation to the bladder wall, thereby greatly improving the comfort of chemotherapy infusion for patients; the structure is simple, the surgical operation is simple, and the efficiency of chemotherapy drug infusion is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the perfusion tube after the guide wire is inserted into the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the liquid outlet section after bending in the overall structure of the utility model;

[0018] Figure 3 for Figure 2 Schematic diagram of the decomposition;

[0019] Figure 4 It is a cross-sectional schematic diagram of the fixing sleeve in the overall structure of the utility model.

[0020] In the figure: 1. Port body; 2. Infusion tube; 3. Liquid outlet section; 4. Infusion hole; 5. Outlet tube; 6. Fixing sleeve; 7. Raised ring; 8. Concave arc ring; 9. Guide wire. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. All directional indications in the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship and movement status of the various components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0022] like Figure 1-4 As shown, this embodiment provides a bladder infusion chemotherapy device, which includes a port body 1 and an infusion tube 2. One end of the infusion tube 2 is connected to the port body 1, and the other end of the infusion tube 2 is provided with a liquid outlet section 3 of an elastic structure. The liquid outlet section 3 is bent in a state without external force, forming an existing pigtail tube shape. A plurality of infusion holes 4 are provided on one side of the liquid outlet section 3, preferably 5. At the end of the liquid outlet section 3, after the infusion tube 2 is extended into the bladder, the liquid outlet section 3 automatically bends toward the side of the infusion hole 4. During operation, a guide wire 9 is first inserted into the infusion tube 2, and the guide wire 9 is inserted into the bladder. The liquid outlet section 3 on the perfusion tube 2 is straightened, and under the action of the guide wire 9, the perfusion tube 2 is introduced from the subcutaneous tissue into the bladder. Then the guide wire 9 is pulled out, and the liquid outlet section 3 automatically bends, connecting the perfusion tube 2 to the port body 1. A pit is dug subcutaneously, and the port body 1 is buried in the subcutaneous pit. The side holes of the port body 1 are sutured to the skin, thus burying the port body 1 under the skin. The top of the port body 1 is made of silicone material, and the interior of the port body 1 is a cavity structure and is connected to the perfusion tube 2. When injecting chemotherapy drugs, the injection needle is inserted from the top of the port body 1, and the chemotherapy drugs are injected from the outside of the skin to the inside.

[0023] Specifically, the liquid outlet section 3 is spirally curved and the circumferential bending angle is greater than 360°, so that the liquid outlet section 3 can surround the infusion hole 4 after bending, so that the chemotherapy drug will not be sprayed onto the bladder wall when it is sprayed, and the infusion holes 4 are arranged in multiple and equidistant locations to improve the infusion efficiency.

[0024] The front end of the liquid outlet section 3 has an opening and a rounded corner structure. When introduced, it passes through the opening onto the guide wire, forming a constricted structure at the front end of the liquid outlet section 3 to avoid scratching the channel tissue or bladder wall during insertion.

[0025] like Figure 3-4 As shown, an outlet pipe 5 is provided on the port body 1, and the outlet pipe 5 is communicated with the cavity structure inside the port body 1. The perfusion tube 2 is interference-fitted with the outlet pipe 5. The port body 1 is a shell frame structure, which can be used to dock a chemotherapy drug injector, and a fixing sleeve 6 is also provided on the outside of the outlet pipe 5. The fixing sleeve 6 presses the perfusion tube 2 to improve the connection firmness between the outlet pipe 5 and the perfusion tube 2.

[0026] A raised ring 7 is provided on the outside of the outlet pipe 5, and a matching concave arc ring 8 is provided on the inner wall of the fixing sleeve 6. When the fixing sleeve 6 is sleeved on the outside of the outlet pipe 5, the raised ring 7 is embedded in the concave arc ring 8 to fix the fixing sleeve 6, and an external thread is provided on the outside of the portion of the outlet pipe 5 between the raised ring 7 and the port to further improve the firmness of the crimping of the fixing sleeve 6 to the perfusion tube 2.

[0027] Its working principle is: the front end of the irrigation tube 2 is set as a liquid outlet section 3 with an elastic structure, and an irrigation hole 4 is set on the curved side. During installation, the guide wire 9 is first inserted into the irrigation tube 2 so that the liquid outlet section 3 of the irrigation tube 2 remains straight, and then the irrigation tube 2 is inserted into the bladder. After the irrigation tube 2 is inserted into the bladder, the guide wire 9 is pulled out, and the liquid outlet section 3 is bent toward one side of the irrigation hole 4, so that the bent liquid outlet section 3 surrounds the irrigation hole 4, and then the irrigation tube 2 is fixedly connected to the outlet tube 5 on the port body 1, and chemotherapy drugs are infused into the irrigation tube 2 through the port body 1. When infusing chemotherapy drugs, there is no need to insert a catheter through the urethra, and the stimulation to the bladder wall is also relatively light, which improves the patient's comfort during chemotherapy infusion. It has a simple structure, convenient surgical operation, and high efficiency in chemotherapy drug infusion.

[0028] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bladder instillation chemotherapy device, comprising a port body and an instillation tube, one end of the instillation tube being connected to the port body, characterized in that: The other end of the perfusion tube is provided with a liquid outlet section with an elastic structure. The liquid outlet section is curved when not subjected to external force. A perfusion hole is provided on one side of the liquid outlet section. The end of the liquid outlet section of the perfusion tube has an opening.

2. The bladder instillation chemotherapy device according to claim 1, characterized in that: After the irrigation tube is inserted into the bladder, the liquid outlet section automatically bends toward the side of the irrigation hole.

3. The bladder instillation chemotherapy device according to claim 1, characterized in that: The liquid outlet section is spirally curved and has a circumferential bending angle greater than 360°.

4. The bladder instillation chemotherapy device according to claim 1, characterized in that: The injection holes are arranged in a plurality and at equal intervals.

5. The bladder instillation chemotherapy device according to claim 1, characterized in that: The front end of the liquid outlet section is a rounded structure.

6. A bladder instillation chemotherapy device according to any one of claims 1 to 4, characterized in that: An outlet pipe is provided on the port body, and the perfusion pipe is plugged with the outlet pipe by interference fit.

7. The bladder instillation chemotherapy device according to claim 6, characterized in that: It also includes a fixing sleeve, which is arranged on the outside of the outlet pipe and presses the perfusion pipe tightly.

8. The bladder instillation chemotherapy device according to claim 7, characterized in that: The outer side of the outlet pipe is provided with a raised ring, and the inner side wall of the fixing sleeve is provided with a matching concave arc ring. When the fixing sleeve is sleeved on the outer side of the outlet pipe, the raised ring is embedded in the concave arc ring.

9. The bladder instillation chemotherapy device according to claim 8, characterized in that: The outer side of the outlet pipe is provided with an external thread on the portion between the raised ring and the port.

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