Argon-helium knife cryoablation device capable of avoiding repeated puncture

Abstract

An argon-helium knife cryoablation device capable of avoiding repeated puncture comprises an inner tube body and an outer tube body, the inner tube body is inserted into the outer tube body, the front end of the inner tube body is of a puncture head structure, the front portion of the inner tube body is provided with a variable-diameter section, the outer diameter of the variable-diameter section is smaller than that of the inner tube body, a concave area is formed in the peripheral area of the variable-diameter section, and the outer diameter of the concave area is larger than that of the inner tube body. A plurality of release needle tubes are arranged in the concave area; in conclusion, the utility model provides a device capable of reducing the side effect of the argon-helium knife as much as possible and avoiding repeated puncture, so that multi-point argon-helium knife cryotherapy can be conveniently carried out on tumors with different shapes and different sizes through one-time puncture, and the injury caused by repeated puncture is avoided; the position of the head end of the argon-helium knife releasing needle tube can be adjusted to achieve cryotherapy on different planes and positions, the outer tube body can prevent tumor metastasis, the electric heating ring can reduce the frostbite effect of freezing, in addition, liquid of necrotic tumor can be sucked, and adverse reactions such as heat absorption of a patient after an operation are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and in particular relates to an argon-helium knife cryoablation device which can avoid multiple punctures. Background Art

[0002] Argon-helium knife is a common minimally invasive treatment method for tumors. During treatment, puncture is generally performed under the guidance of B-ultrasound, CT, and magnetic resonance imaging, and the entire puncture process can be monitored in real time through the above imaging methods. There are many surgical methods, such as percutaneous puncture, surgical puncture under direct vision, and laparoscopic puncture. Under the guidance of imaging equipment, the puncture device of the argon knife is accurately punctured into the tumor body, and then the argon gas is started first. The argon gas expands rapidly at the end of the puncture needle to produce a refrigeration effect, freezing the diseased tissue to minus 140℃~170℃ within 15 seconds. After 15~20 minutes, the argon gas is turned off and the helium gas is started again. The helium gas can raise the temperature of the diseased tissue from minus 140℃ to 20℃~40℃ above zero, thereby performing rapid heat therapy. After 3~5 minutes, the treatment is repeated once more. This kind of cold and hot treatment method can have a good killing effect on tumors, and the necrotic tumor tissue can be recognized by its own immune cells, and then produce antibodies against the tumor to further play an anti-tumor immunotherapy role.

[0003] The existing argon-helium knife treatment mainly adopts the treatment principle of freezing and heating, and the effective treatment range of the head of the puncture device is limited, generally about 2-3 cm. Therefore, when the tumor is large in diameter or irregular in shape, it is necessary to repeatedly puncture multiple parts to achieve a good treatment effect. Repeated tumor tissue puncture increases the patient's injury on the one hand, and is easy to damage the tissues and organs passed by the puncture needle. On the other hand, puncturing the tumor may cause tumor cells to remain at the head end of the puncture needle, which may cause the tumor to spread and metastasize when the puncture needle is pulled out. The argon-helium knife adopts low-temperature freezing treatment, and the diseased tissue is frozen to -140℃~-170℃. The freezing effect is transmitted through the puncture needle and is usually easy to damage the surrounding tissues of the puncture, mainly frostbite of skin tissue, and some patients experience devitalization and necrosis of skin tissue. Utility Model Content

[0004] The utility model aims to provide an argon-helium cryoablation device that avoids multiple punctures, thereby solving the technical problems in the prior art that the argon-helium cryoablation requires repeated punctures for larger tumors, which increases patient damage and easily causes tumor spread and metastasis.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] An argon-helium knife cryoablation device for avoiding multiple punctures comprises an inner tube body and an outer tube body, wherein the inner tube body is inserted in the outer tube body, the front end of the inner tube body is a puncture head structure, the front part of the inner tube body has a variable diameter section, the outer diameter of the variable diameter section is smaller than the outer diameter of the inner tube body, the outer peripheral area of ​​the variable diameter section forms a recessed area, a plurality of release needle tubes are arranged in the recessed area, the front end of the release needle tube is connected to the upper end outer wall of the variable diameter section in a hinged manner, the axis of the release needle tube and the axis of the variable diameter section have an included angle, a plurality of through holes are opened in the tube wall of the inner tube body, a driving rod assembly is inserted in each through hole, and the driving rod assembly is arranged one-to-one with the release needle tube;

[0007] The driving rod assembly includes a straight rod body and a threaded rod, the lower end of the straight rod body is rotatably matched with the upper end of the threaded rod through a rotating member, the lower part of the through hole is a threaded hole structure, the upper end of the straight rod body extends into the recessed area, and the upper end of the straight rod body is connected with a collar, which is sleeved on the corresponding release needle tube, the threaded rod is threadedly matched with the threaded hole structure at the lower part of the through hole, and the lower end of the threaded rod is connected with an operating handle after passing through the through hole;

[0008] An electric heating ring is sleeved on the lower part of the outer tube body, an adhesive sticker is arranged on the electric heating ring, and an air injection tube is passed through the inner tube body, and the end of the air injection tube is connected with the end of all the release needle tubes.

[0009] Furthermore, the outer wall of the inner tube body is provided with length scale lines.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model proposes a device that minimizes the side effects of argon-helium cryotherapy and avoids multiple punctures, which facilitates multi-point argon-helium cryotherapy for tumors of different shapes and sizes with one puncture, avoiding the damage caused by multiple punctures, and can adjust the position of different argon-helium cryotherapy needle head ends to achieve cryotherapy in different planes and positions, and the outer tube body can be used to place tumor metastasis, and the electric heating ring reduces the frostbite effect of freezing. In addition, the fluid of necrotic tumors can also be sucked out to reduce adverse reactions such as "absorbed heat" after surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0012] Figure 1 This is a schematic diagram of the structure of an argon-helium cryoablation device that avoids multiple punctures according to the utility model;

[0013] Figure 2 is a schematic diagram of the structure of the outer tube;

[0014] Figure 3 is a schematic diagram of the structure of the inner tube body;

[0015] Figure 4 This is a schematic diagram of the installation position of the release needle;

[0016] Figure 5 Schematic diagram of the structure of the drive rod assembly. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] The present invention is further described in detail below in conjunction with the embodiments.

[0019] like Figure 1-5 As shown, a specific embodiment of an argon-helium knife cryoablation device for avoiding multiple punctures provided by the utility model is as follows:

[0020] An argon-helium knife cryoablation device for avoiding multiple punctures comprises an inner tube body 1 and an outer tube body 2, wherein the outer wall of the inner tube body 1 is provided with length scale lines, the inner tube body 1 is inserted into the outer tube body 2, the front end of the inner tube body 1 is a puncture head structure 3, the front part of the inner tube body 1 is provided with a reducing section 4, the outer diameter of the reducing section 4 is smaller than the outer diameter of the inner tube body 1, the outer peripheral area of ​​the reducing section 4 forms a recessed area 5, four release needle tubes 6 are provided in the recessed area 5, the front end of the release needle tube 6 is connected to the upper end outer wall of the reducing section 4 in a hinged manner, the axis of the release needle tube 6 and the axis of the reducing section 4 have an angle, a plurality of through holes are opened in the tube wall of the inner tube body 1, a driving rod assembly 7 is inserted in each through hole, and the driving rod assembly 7 is provided in a one-to-one correspondence with the release needle tube 6;

[0021] like Figure 5 As shown, the driving rod assembly 7 includes a straight rod body 8 and a threaded rod 9. The lower end of the straight rod body 8 is rotatably matched with the upper end of the threaded rod 9 through a rotating member 10. The lower part of the through hole is a threaded hole structure. The upper end of the straight rod body 8 extends into the recessed area 5, and the upper end of the straight rod body 8 is connected with a collar 11, which is sleeved on the corresponding release needle tube 6. The threaded rod 9 is threadedly matched with the threaded hole structure at the lower part of the through hole. The lower end of the threaded rod 9 is connected with an operating handle 12 after passing through the through hole.

[0022] An electric heating ring 13 is sleeved on the lower part of the outer tube body 2, and the electric heating ring 13 can move on the outer tube body 2. An adhesive sticker is provided on the electric heating ring 13. The electric heating ring 13 is an existing conventional technology, and its specific structure and how to control the temperature should be well known to technicians in this field, so they will not be repeated here; an air injection tube 14 is passed through the inner tube body 1, and the end of the air injection tube 14 is connected to the end of all the release needle tubes 6.

[0023] When the argon-helium cryoablation device of this embodiment that avoids multiple punctures is used, puncture is first performed under the guidance of B-ultrasound, CT or magnetic resonance imaging. The entire device is punctured into the patient's body at the lesion location through various methods such as percutaneous puncture, puncture under direct surgical vision, laparoscopic puncture, etc. When the tumor tissue is about to be punctured, the outer tube body 2 is fixed, and the inner tube body 1 is continuously pushed forward so that the puncture head structure 3 at the front end punctures the inside of the tumor tissue. After entering the tumor, the release needle tube 6 is expanded according to the diameter and shape of the tumor. The specific operation is as follows: screw the operating handle 12, rotate the threaded rod 9, the threaded rod 9 moves forward in the threaded hole structure, and then pushes the straight rod body 8 forward. The straight rod body 8 drives the ring 11 to move. During the movement of the ring 11, the inclined release needle tube 6 is expanded. The "inclination" here is relative to the axis of the variable diameter section 4. Generally, the position of the opening of the release needle tube 6 is about 1 cm away from the outer edge of the tumor to achieve a good cryotherapy effect.

[0024] Then push the electric heating ring 13 forward along the outer tube 2, and stick the electric heating ring 13 to the skin or tissue around the puncture site through the adhesive patch. After turning on the power, it is powered on for heating. The heating can absorb a certain amount of argon gas freezing and conduct the temperature to the skin, reducing the side effect of skin frostbite; then inject argon and helium into all the release needle tubes 6 through the gas injection tube 14. After the argon continues for 15 to 20 minutes, the argon is turned off and the helium is started again. After 3 to 5 minutes, the above treatment is repeated once; after completing the treatment process of the argon-helium knife At the same time, the liquid of tumor liquefaction and necrosis can be sucked through the gas injection tube 14 to reduce the adverse reactions of patients after surgery; after the argon-helium knife treatment is completed, the outer tube body 2 is pushed forward to reach the edge of the tumor, and then the screw rod is screwed backward to restore the release needle tube 6 to its original shape, that is, it is stored in the recessed area 5, and then the inner tube body 1 is pulled backward, and the inner tube body 1 and the release needle tube 6 thereon are pulled into the outer tube body 2 to prevent the tumor cells remaining on the needle from spreading and metastasizing. Finally, the entire device is pulled out, the electric heating ring 13 is torn off, and the puncture point is pressed to stop bleeding.

[0025] It should be noted that, in this article, terms such as "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0026] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An argon-helium cryoablation device that avoids multiple punctures, characterized in that: The invention comprises an inner tube body and an outer tube body, wherein the inner tube body is inserted in the outer tube body, the front end of the inner tube body is a puncture head structure, the front part of the inner tube body has a diameter-changing section, the outer diameter of the diameter-changing section is smaller than the outer diameter of the inner tube body, the outer peripheral area of ​​the diameter-changing section forms a recessed area, a plurality of release needle tubes are arranged in the recessed area, the front end of the release needle tubes is connected to the upper end outer wall of the diameter-changing section by a hinged manner, the axis of the release needle tube and the axis of the diameter-changing section have an included angle, a plurality of through holes are opened in the tube wall of the inner tube body, a driving rod assembly is inserted in each through hole, and the driving rod assembly is arranged one by one corresponding to the release needle tube; The driving rod assembly includes a straight rod body and a threaded rod, the lower end of the straight rod body is rotatably matched with the upper end of the threaded rod through a rotating member, the lower part of the through hole is a threaded hole structure, the upper end of the straight rod body extends into the recessed area, and the upper end of the straight rod body is connected with a collar, which is sleeved on the corresponding release needle tube, the threaded rod is threadedly matched with the threaded hole structure at the lower part of the through hole, and the lower end of the threaded rod is connected with an operating handle after passing through the through hole; An electric heating ring is sleeved on the lower part of the outer tube body, an adhesive sticker is arranged on the electric heating ring, and an air injection tube is passed through the inner tube body, and the end of the air injection tube is connected with the end of all the release needle tubes.

2. The argon-helium cryoablation device for avoiding multiple punctures according to claim 1, characterized in that: The outer wall of the inner tube body is provided with length scale lines.

Images