A tumor interventional hyperthermia device

Abstract

This invention discloses a tumor interventional hyperthermia device, comprising a cylindrical body composed of an inner cylinder and an outer cylinder. A piston is located within the inner cylinder, and a push rod is connected to the rear end of the piston, extending out of the inner cylinder. The front end of the inner cylinder has a sleeve extending into the outer cylinder, with a needle fixed to the front end of the sleeve. An overflow tube communicating with the inner cavity of the inner cylinder is fixed to the top of the inner cylinder. The upper end of the overflow tube extends into the outer cylinder and is fitted with a dust cover. An isolation plug is fixed inside the overflow tube. The upper and lower ends of the overflow tube respectively have a first channel and a second channel, which communicate with the isolation plug. This invention has a simple structure, reducing manufacturing costs. When the injection speed is too fast, excess reagent can overflow through the isolation plug in the overflow tube, effectively preventing damage to the human body when reagent is injected too quickly.

Description

Technical Field

[0001] This invention relates to the field of medical and nursing equipment technology, specifically to a tumor interventional hyperthermia device. Background Technology

[0002] Tumor hyperthermia involves raising the temperature of tumor tissue and surrounding tissues through various heating methods. When the tumor tissue is heated to a certain temperature, tumor cells can be killed. Simultaneously, because normal cells have better heat resistance than tumor cells, they are less likely to be burned under the same heating conditions, thus protecting normal tissues to a certain extent. Chinese patent number 201811617156.9 discloses a tumor interventional hyperthermia device, including a main body. The main body comprises a baffle, an inner cylinder, and an outer cylinder. The baffle is located at the front end of the main body, and both the inner and outer cylinders are fixed to the baffle. A through hole is opened in the middle of the baffle, connecting to the cavity inside the inner cylinder. A needle is located at the front end of the main body, comprising an inner tube and an outer tube. The inner tube is connected to the edge of the through hole. A piston is located inside the inner cylinder, and a push rod is connected to the rear end of the piston. The needle has two layers, an inner and an outer layer. When the injection speed is too fast, the excess reagent can be discharged from the gap between the outer and inner tubes, effectively preventing damage to the human body when the reagent is injected too quickly. The reagent discharged between the outer and inner tubes can keep the inner tube and the reagent inside the inner tube warm, making it more practical.

[0003] However, the above design still has shortcomings. The tumor interventional hyperthermia device designed above contains components such as heating wire, temperature display, battery, temperature sensor, and micro pump. The structural design is too complex and the manufacturing cost is too high. The overflow effect achieved by the two-layer needle is not ideal. Summary of the Invention

[0004] In view of the above-mentioned deficiencies of the prior art, the purpose of the present invention is to provide a tumor interventional hyperthermia device that is simple in structure and easy to use.

[0005] The technical solution of the present invention is: a tumor interventional hyperthermia device, comprising a cylinder composed of an inner cylinder and an outer cylinder, a piston is provided inside the inner cylinder, a push rod is connected to the rear end of the piston, the push rod extends out of the inner cylinder, a sleeve extending out of the outer cylinder is fixed to the front end of the inner cylinder, a needle is fixed to the front end of the sleeve, an overflow pipe communicating with the inner cavity of the inner cylinder is fixed to the top of the inner cylinder, the upper end of the overflow pipe extends out of the outer cylinder and is fitted with a dust cover, an isolation plug is fixed inside the overflow pipe, and the upper and lower ends of the overflow pipe have a first channel and a second channel respectively, the first channel and the second channel communicating with the isolation plug.

[0006] Furthermore, the upper outer wall of the overflow pipe has an annular lug, and the inner wall of the dust cover has a groove that matches the shape of the lug and allows the lug to be inserted.

[0007] Furthermore, the top side of the dust cover has a protruding buckle plate.

[0008] Furthermore, multiple protruding pillars are fixed between the outer wall of the inner cylinder and the inner wall of the outer cylinder.

[0009] Furthermore, an end cap is fixed to the rear end of the cylinder, and a push rod is used to pass through the end cap.

[0010] Furthermore, the isolation plug is spherical, and the first and second channels are cylindrical, with the inner diameter of the isolation plug being larger than the inner diameters of the first and second channels.

[0011] Furthermore, the overflow pipe is fixed at the front end of the top of the inner cylinder.

[0012] The advantages of using the tumor interventional hyperthermia device provided by this invention are: simple structure, reduced manufacturing cost; when the injection speed is too fast, excess reagent can overflow through the isolation plug in the overflow tube, effectively preventing damage to the human body when the reagent is injected too quickly. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0014] Figure 2 for Figure 1 Schematic diagram of the structure of region A in the middle;

[0015] Figure 3 This is a cross-sectional schematic diagram of the dust cover of the present invention.

[0016] In the figure: 100—cylinder body, 1—inner cylinder, 11—sleeve head, 2—outer cylinder, 3—piston, 4—push rod, 5—needle, 6—overflow pipe, 61—first channel, 62—second channel, 63—lug, 7—dust cover, 71—slot, 72—clasp plate, 8—isolation plug, 9—protrusion, 10—end cap. Detailed Implementation

[0017] To provide a more intuitive and complete understanding of the technical solution of this invention, the following non-limiting features are described in conjunction with the accompanying drawings:

[0018] like Figure 1 — Figure 3 As shown, a tumor interventional hyperthermia device includes a cylinder 100 composed of an inner cylinder 1 and an outer cylinder 2. A piston 3 is provided inside the inner cylinder 1, and a push rod 4 is connected to the rear end of the piston 3. The push rod 4 extends out of the inner cylinder 1. A sleeve 11 extending out of the outer cylinder 2 is fixed to the front end of the inner cylinder 1. A needle 5 is fixed to the front end of the sleeve 11. An overflow pipe 6 communicating with the inner cavity of the inner cylinder 1 is fixed at the front end of the top of the inner cylinder 1. The upper end of the overflow pipe 6 extends out of the outer cylinder 2 and is fitted with a dust cover 7. An isolation plug 8 is fixed inside the overflow pipe 6. The upper and lower ends of the overflow pipe 6 have a first channel 61 and a second channel 62, respectively, which are connected to the isolation plug 8.

[0019] The cylinder 100 has a two-layer structure consisting of an inner cylinder 1 and an outer cylinder 2, which can achieve a good heat preservation effect and effectively reduce the rate of heat loss of the reagent in the inner cylinder 1, so that the reagent at the tumor site is always at a higher temperature to kill tumor cells, resulting in better performance.

[0020] The upper outer wall of the overflow pipe 6 has an annular lug 63, and the inner wall of the dust cover 7 has a slot 71 that matches the shape of the lug 63 and allows the lug 63 to be inserted, so as to fix the dust cover 7 in place.

[0021] The dust cover 7 has a protruding buckle 72 on one side of its top. The dust cover 7 can be easily removed by prying the buckle 72 by hand.

[0022] Multiple protruding posts 9 are fixed between the outer wall of the inner cylinder 1 and the inner wall of the outer cylinder 2, which ensures a stable connection between the inner cylinder 1 and the outer cylinder 2.

[0023] An end cap 10 is fixed at the rear end of the cylinder 100, and a push rod 4 is used for the end cap 10 to pass through. The end cap 10 can prevent dust from entering the inner cylinder 1.

[0024] The isolation plug 8 is spherical, while the first channel 61 and the second channel 62 are cylindrical. The inner diameter of the isolation plug 8 is larger than the inner diameters of the first channel 61 and the second channel 62. Specifically, the inner diameters of the first channel 61 and the second channel 62 are the same, while the inner diameter of the isolation plug 8 is twice that of the first channel 61 and the second channel 62, so that the isolation plug 8 will not slide out of the overflow pipe 6.

[0025] In use, first pry open the buckle plate 72 to remove the dust cover 7 from the overflow pipe 6. Then, take a clean and sterilized needle and insert it into the first channel 61 to puncture the isolation plug 8. Then, pull the push rod 4 to move the piston 3 and use the needle 5 to draw the heated reagent. After the reagent is drawn, inject the reagent into the patient's tumor. When the injection speed is too fast, the excess reagent can overflow through the isolation plug 8, effectively preventing damage to the human body when the reagent is injected too quickly.

[0026] Of course, the above are only preferred embodiments of the present invention and do not limit the patent scope of the present invention. Any simple modifications and equivalent structural changes made based on the contents of the present invention specification and drawings should also be included within the patent protection scope of the present invention.

Claims

1. A tumor interventional hyperthermia device, comprising a cylindrical body consisting of an inner cylinder and an outer cylinder, wherein a piston is disposed within the inner cylinder, a push rod is connected to the rear end of the piston, the push rod extends out of the inner cylinder, and a sleeve extending out of the outer cylinder is provided at the front end of the inner cylinder, wherein a needle is fixed at the front end of the sleeve, characterized in that: An overflow pipe communicating with the inner cavity of the inner cylinder is fixed at the top of the inner cylinder. The upper end of the overflow pipe extends out of the outer cylinder and is fitted with a dust cover. An isolation plug is fixed inside the overflow pipe. The upper and lower ends of the overflow pipe have a first channel and a second channel, respectively, and the first channel and the second channel are connected to the isolation plug. The isolation plug is spherical, and the first channel and the second channel are cylindrical. The inner diameter of the isolation plug is larger than the inner diameter of the first channel and the second channel. The inner diameters of the first channel and the second channel (62) are the same. The inner diameter of the isolation plug is twice that of the first channel and the second channel, so that the isolation plug will not slide out of the overflow pipe. The upper outer wall of the overflow pipe has an annular lug, and the inner wall of the dust cover has a groove that matches the shape of the lug and allows the lug to be inserted. The dust cover has a protruding buckle on one side of its top; Multiple protruding pillars are fixed between the outer wall of the inner cylinder and the inner wall of the outer cylinder; The overflow pipe is fixed at the front end of the top of the inner cylinder; In use, first pry open the buckle to remove the dust cover from the overflow tube. Then, take a clean and sterilized needle and insert it into the first channel to puncture the isolation plug. Next, pull the push rod to move the piston and use the needle to draw up the heated reagent. After the reagent is drawn up, inject the reagent into the patient's tumor. If the injection speed is too fast, the excess reagent can overflow through the isolation plug, effectively preventing damage to the human body when the reagent is injected too quickly.

2. The tumor interventional hyperthermia device according to claim 1, characterized in that: A cap is fixed at the rear end of the cylinder, and a push rod is used to pass through the cap.

Images