Magnesium needle and delivery device thereof

Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to a magnesium needle and a delivery device thereof. The magnesium needle delivery device comprises a guide puncture needle of a cylindrical hollow structure; and the pushing rod is inserted into the guiding puncture needle. And a magnesium needle inserted into the guide puncture needle. And the lower end of the pushing rod is used for pushing the upper end of the magnesium needle. When the delivery device provided by the invention is used for treating hemangioma, the defects caused by the treatment mode of isotope, copper needle, anti-tumor medicine, laser, freezing, interventional embolism, operation and other technologies during hemangioma treatment can be avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of medical equipment, and in particular relates to a magnesium needle and a delivery device thereof. Background Art

[0002] Hemangiomas are caused by congenital maldevelopment of blood vessels during the embryonic period. They are manifested as "proliferation" or "malformation" of capillaries, veins, arteries and other blood vessels. They have the dual characteristics of tumors and malformations and are common vascular diseases. The incidence of hemangiomas in newborns exceeds 10%. Hemangiomas can grow in any part of the body, but are most common in the head and neck, accounting for about 40%-60%. Hemangiomas not only affect the patient's appearance, but may also affect the patient's psychology, causing the patient to experience anxiety, depression and other emotional problems during life and treatment, which brings serious economic, life and psychological pressure to the patient and his family.

[0003] Common treatments for hemangiomas include isotopes, copper needles, anti-tumor drugs, laser, freezing, interventional embolization, and surgery. However, the above treatment methods have inevitable disadvantages: 1. Most patients will have local skin darkening during isotope treatment, and even cause radiation dermatitis, local skin depigmentation and atrophy, and children are prone to changes in the hematopoietic system; 2. Copper needle treatment has the disadvantages of obvious scars and the need for secondary surgery to remove, and because the copper needle has an external stump, it is difficult to care for children after surgery, and the infection rate is high and the secretion is obvious; 3. Anti-tumor drugs have serious side effects, which can lead to hypoleukocytosis and reduce the body's immunity; 4. Laser treatment has a long cycle, requires multiple treatments, and is not suitable for the treatment of deep vascular malformations; 5. The depth of cryotherapy is not easy to control, and it is also not suitable for the treatment of deep vascular malformations and large-area hemangiomas; 6. Interventional embolization therapy will cause radiation damage to patients, and it requires large-scale imaging equipment, which requires high skills for medical staff and is inconvenient to be carried out in primary hospitals; 7. For large-area hemangiomas, surgical resection has the problems of difficulty in accurately judging the scope of the lesion, massive bleeding during surgery, secondary bleeding after surgery, and difficulty in direct suturing. Therefore, it is of great significance to develop a simple and safe treatment method or auxiliary treatment for hemangiomas. Summary of the invention

[0004] In order to solve the shortcomings of the prior art, the present invention provides a magnesium needle and a delivery device thereof. By using the delivery device provided by the present invention to treat hemangiomas, the shortcomings of isotopes, copper needles, anti-tumor drugs, lasers, freezing, interventional embolization and surgery in treating hemangiomas can be avoided.

[0005] The technical solution provided by the present invention is as follows:

[0006] A magnesium wire, the surface of which is coated with a degradable layer.

[0007] All elements of magnesium wire are necessary for the human body. It is a degradable magnesium component with good biocompatibility. At the same time, due to the degradability of magnesium, secondary surgical removal is avoided.

[0008] The magnesium wire material can be prepared by existing technology, and a degradable layer, such as a PVA layer, a polylactic acid layer, etc., is wrapped on the pure magnesium wire.

[0009] The PVA layer on the surface of the magnesium wire plays a protective role, such as anti-oxidation. After entering the human body, it can dissolve quickly, allowing the magnesium wire to play its role.

[0010] The present invention also provides the application of the magnesium wire for making medical equipment, tools or devices for treating hemangioma.

[0011] The present invention also provides a magnesium needle, comprising:

[0012] Polylactic acid strips;

[0013] and at least one magnesium material wire wound around the polylactic acid thin strip.

[0014] Based on the above technical solution:

[0015] Polylactic acid strips can be introduced through magnesium material wires;

[0016] Polylactic acid is a biodegradable and repairable material. It can produce acidic substances during the degradation process, which can neutralize the OH produced by magnesium degradation. - Causes pH to rise, thus avoiding OH - It not only causes hemolytic effect, but also accelerates the degradation of magnesium.

[0017] Preferably, the magnesium material wire is the above-mentioned magnesium wire.

[0018] Preferably, the number of the magnesium material wires is two.

[0019] Specifically, a magnesium needle material filament and a thin polylactic acid strip are woven into a twisted fine needle structure.

[0020] Based on the above technical solution, the contact area between the magnesium needle and the hemangioma tissue can be increased to accelerate the degradation of magnesium, and at the same time, multiple strands of winding can improve the strength of magnesium.

[0021] The present invention also provides a magnesium needle delivery device, comprising:

[0022] A puncture needle with a cylindrical hollow structure;

[0023] and a pushing rod inserted into the puncture needle.

[0024] Based on the above technical solution, the buried magnesium needles can be pre-hidden through the cylindrical hollow structure.

[0025] Specifically, the lower portion of the puncture needle has a wedge-shaped tip.

[0026] Based on the above technical solution, the tip with a wedge-shaped opening at the front end is conducive to guiding the puncture needle to penetrate the hemangioma tissue.

[0027] Specifically, a scale and a preset depth marking line are arranged on the outer wall of the puncture needle.

[0028] Based on the above technical solution, it is convenient to judge the length of the reserved magnesium needle on the one hand, and to judge the puncture depth of the guided puncture needle in the hemangioma tissue on the other hand. The scale and the preset depth marking line can be of different thickness and color.

[0029] Specifically, a hollow regular polygonal needle seat is provided on the top of the puncture needle.

[0030] Based on the above technical solution, the needle seat structure increases the contact area with the operator's fingers, making it easier for the operator to hold and apply force to the guide puncture needle during puncturing hemangioma tissue.

[0031] Specifically, the push rod includes a push rod shaft and an enlarged structure fixedly arranged at the end of the push rod shaft. The push rod can be set as an axial hard plastic rod, which is slightly smaller than the cylindrical hollow structure of the guide puncture needle, and the tail end is an enlarged circular plastic structure in the shape of a foil.

[0032] Based on the above technical solution, the push rod is inserted from the tail end of the guide puncture needle, which can conveniently push the pre-retained magnesium needle out of the guide puncture needle and leave it in the hemangioma tissue. The enlarged circular plastic structure at the tail end of the push rod increases the contact area between the operator and the finger, making it easier for the operator to hold the push rod for pushing, and at the same time preventing the push rod from being inserted too deep.

[0033] Specifically, the magnesium needle is inserted into the puncture needle; the lower end of the pushing rod is used to push the upper end of the magnesium needle.

[0034] Based on the above technical solution:

[0035] The magnesium needle can be pre-hidden and buried at the front end of the guide puncture needle, and different buried lengths of the magnesium needle can be pre-set, preferably shorter than the guide puncture needle;

[0036] The magnesium needle and the guide puncture needle are combined together in advance, which is convenient for clinical operation. By presetting the length of the hidden buried magnesium needle, it can be used in clinical hemangiomas of different sizes, thereby improving the selectivity of application.

[0037] Beneficial effects of the present invention:

[0038] Based on the magnesium needle delivery device provided by the present invention, the guide puncture needle plays a role in puncturing the tumor and guiding. After the guide puncture needle reaches the predetermined position of the tumor, the push rod is inserted into the guide puncture needle through the hole at the tail end of the guide puncture needle along the direction of the guide puncture needle, and then the magnesium needle is removed from the front end of the guide puncture needle and retained in the tumor to achieve a therapeutic effect.

[0039] The present invention has the following advantages:

[0040] 1) Simple and safe;

[0041] 2) It is effective for most cavernous hemangiomas without impairing normal function;

[0042] 3) Provides preoperative preparation for extensive or deep hemangiomas treated with other methods;

[0043] 4) It is useful for retreatment of residual hemangiomas after treatment with other methods;

[0044] 5) It can be used multiple times for hemangiomas. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is a schematic diagram of the structure of the magnesium needle provided by the present invention.

[0046] Figure 2 It is a schematic diagram of the braided structure of the magnesium needle provided by the present invention.

[0047] Figure 3 It is a schematic diagram of the structure of the magnesium needle delivery device provided by the present invention.

[0048] Figure 4 It is a schematic diagram of the structure of the guide puncture needle.

[0049] Figure 5 It is a top view of the needle hub portion that guides the puncture needle.

[0050] Figure 6 It is a schematic diagram of the structure of the push rod.

[0051] Figure 7 is an assembly flow chart of the magnesium needle delivery device.

[0052] Attached Figures 1 to 7 The structures represented by the labels are listed below:

[0053] 1. magnesium needle, 2. magnesium material wire, 3. polylactic acid strip, 4. magnesium needle delivery device, 5. guide puncture needle, 6. push rod, 7. needle seat, 8. wedge-shaped tip, 9. push rod shaft, 10. expansion structure, 121. scale, 122. preset depth marking line. DETAILED DESCRIPTION

[0054] The principles and features of the present invention are described below. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0055] Unless otherwise specified, the test methods used in the embodiments of the present invention are all conventional methods; the materials, reagents, etc. used are reagents and materials that can be obtained from commercial channels unless otherwise specified.

[0056] Example 1

[0057] like Figure 1 As shown, the magnesium needle includes: a polylactic acid strip 3; and two strands of magnesium material wire 2 wound around the polylactic acid strip 3.

[0058] like Figure 2 As shown, magnesium wire and polylactic acid strips 3 are woven into a braided structure.

[0059] Based on this technical solution, polylactic acid strips can be introduced through magnesium material wires.

[0060] Example 2

[0061] like Figure 3 As shown, the magnesium needle delivery device 4 comprises: a guide puncture needle 5 of a cylindrical hollow structure; and a push rod 6 inserted into the guide puncture needle 5. The magnesium needle 1 is inserted into the guide puncture needle 5. The lower end of the push rod 6 is used to push the upper end of the magnesium needle 1.

[0062] like Figure 4 As shown, the lower part of the guide puncture needle 5 has a wedge-shaped tip 8. A scale 121 and a preset depth mark line 122 are arranged on the outer wall of the guide puncture needle 5.

[0063] like Figure 5 As shown, a hollow regular polygonal needle seat 7 is provided on the top of the guide puncture needle 5 .

[0064] like Figure 6 As shown, the push rod 6 includes a push rod shaft 9 and an expanded structure 10 fixedly arranged at the end of the push rod shaft 9. The push rod shaft 9 can be an axial hard plastic rod, which is slightly smaller than the cylindrical hollow structure of the guide puncture needle, and the tail end is provided with an expanded circular plastic structure in the shape of a foil.

[0065] Based on this technical solution, the push rod is inserted from the tail end of the guide puncture needle, so that the pre-retained magnesium needle can be easily pushed out of the guide puncture needle and then left in the hemangioma tissue for treatment.

[0066] Example 3

[0067] like Figure 7 As shown, the magnesium needle delivery device can be assembled and used as follows:

[0068] 1) The magnesium needle 1 is cut into a predetermined length, and by presetting the length of the hidden and buried magnesium needles of different sizes, it can be used in clinical hemangiomas of different sizes, thereby improving the selectivity of application;

[0069] 2) The magnesium needle 1 is pre-hidden and buried at the front end of the guide puncture needle 5 to form a combined body for easy clinical operation;

[0070] 3) The push rod 6 is inserted from the tail end of the guide puncture needle 5 to push the pre-retained magnesium needle out of the guide puncture needle and leave it in the hemangioma tissue.

[0071] Magnesium needles can treat hemangiomas through the following effects:

[0072] 1) Physical effect: The magnesium needle punctures into the hemangioma tissue, exerts physical pressure or damage to the hemangioma tissue, thereby promoting the atrophy or necrosis of the hemangioma tissue. The retention of the magnesium needle leads to a local inflammatory response of the hemangioma tissue through direct contact with the hemangioma tissue, thereby promoting the atrophy of the hemangioma tissue.

[0073] 2) Chemical reaction: Magnesium needles undergo degradation reactions in hemangioma tissue, producing hydrogen, which causes damage to the hemangioma tissue, leading to atrophy or necrosis.

[0074] 3) Promote blood clot formation: During the degradation of magnesium needles, Mg 2+ Cations promote the aggregation of red blood cells, platelets, and fibrin with negative charges on their surfaces, leading to the activation of coagulation factors and the formation of blood clots. Blood clots block blood vessels and cause atrophy or necrosis of hemangioma tissue. In addition, high local concentrations of Mg 2+ It can damage the abnormal vascular endothelial cells of hemangiomas and promote the atrophy of abnormal blood vessels.

[0075] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A magnesium wire, characterized in that: The surface of the magnesium wire is coated with a degradable layer.

2. An application of the magnesium wire according to claim 1, characterized in that: Used to make medical equipment, tools or devices for treating hemangiomas.

3. A magnesium needle, characterized in that: include: Polylactic acid strips (3); and at least one magnesium material wire (2) wound around the polylactic acid thin strip (3).

4. The magnesium needle according to claim 3, characterized in that: The magnesium material wire (2) is the magnesium wire according to claim 1.

5. The magnesium needle according to claim 3, characterized in that: The number of the magnesium material wires (2) is two.

6. A magnesium needle delivery device, characterized in that include: A guide puncture needle (5) with a cylindrical hollow structure; and a pushing rod (6) inserted into the guide puncture needle (5).

7. The magnesium needle delivery device according to claim 6, characterized in that: The lower part of the guide puncture needle (5) has a wedge-shaped tip (8); The outer wall of the guide puncture needle (5) is provided with a scale (121) and a preset depth marking line (122); A hollow regular polygonal needle seat (7) is provided on the top of the guide puncture needle (5).

8. The magnesium needle delivery device according to claim 6, characterized in that The push rod comprises a push rod shaft (9) and an enlarged structure (10) fixedly arranged at the end of the push rod shaft (9).

9. The magnesium needle delivery device according to any one of claims 6 to 8, characterized in that: The magnesium needle (1) according to any one of claims 3 to 5 is inserted into the guide puncture needle (5).

10. The magnesium needle delivery device according to any one of claims 6 to 8, characterized in that: The lower end of the pushing rod (6) is used to push the upper end of the magnesium needle (1).

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