WO2013134908A1

WO2013134908A1 - Thermocoagulation needle

Info

Publication number: WO2013134908A1
Application number: PCT/CN2012/072168
Authority: WO
Inventors: 李农; 富大芊; 杨振坤; 丁文京; 王嘉齐
Original assignee: Li Nong; Fu Daqian; Yang Zhenkun; Ding Wenjing; Wang Jiaqi
Priority date: 2012-03-11
Filing date: 2012-03-11
Publication date: 2013-09-19

Abstract

A thermocoagulation needle comprises a handle (1) and a needle body (2). A coaxial cable (10) is arranged in the handle (1) and comprises an inner conductor (12), an outer conductor (14) and an insulating medium (16) arranged between the inner conductor (12) and the outer conductor (14). The needle body (2) is connected with the inner conductor (12), and an insulator (3) is sleeved on a portion close to the handle (1) of the needle body (2). The thermocoagulation needle can excellently control the areas of coagulation of subcutaneous tissues during treatment of bromhidrosis, and does not wound the surface of the skin, thereby causing patients no post-surgical discomfort.

Description

Heat setting needle

Technical field

The invention relates to the field of medical instruments, in particular to a thermocoagulation needle. Background technique

Say

The RF/microwave method is currently one of the most important methods for treating underarm odor. During treatment, the needle of a microwave needle is inserted into the pores along the root of the hair about 5 mm deep. At the same time, the needle body is electrically connected to a radio frequency generating device or a microwave generating device, and the needle body is appropriately emitted by adjusting the power of the device. Radio frequency or microwave, which causes the temperature of the tissue around the needle to rise and rapidly coagulate, thereby destroying the hair follicle and the size of the sweat gland, causing it to shrink and achieve therapeutic purposes. In the present invention, such a microwave needle is referred to as a thermocoagulation needle.

In the prior art, while the heat generated by the needle of the thermocoagulation needle solidifies the large and small sweat glands and hair follicles, the needle needle and the surface of the skin surface are also solidified. The coagulation of such a needle and the surface of the skin is undesirable because it constitutes a trauma to the axillary site and causes inconvenience to the patient's work and life in a short period of time after surgery. Summary of the invention

SUMMARY OF THE INVENTION It is an object of the present invention to provide an improved thermocoagulation needle which overcomes the drawbacks of prior art thermocoagulation needles which are non-selective to the area of coagulation of the odorous portion in the treatment of underarm odor.

The thermocoagulation needle of the present invention comprises: a handle, wherein a coaxial cable is provided, the coaxial cable comprising an inner conductor and an outer conductor, and an insulating medium interposed between the inner conductor and the outer conductor; and a needle body, The inner conductor is fixedly connected. Under normal circumstances, the needle body is integrally formed with the inner conductor. The needle body is sleeved with an insulator adjacent to the handle, and the length of the needle body does not exceed 20 mm, typically between 10-15 mm. .

In a specific embodiment, the insulator is fixedly coupled to the coaxial cable.

Preferably, as for the various embodiments described above, the outer diameter of the insulator is between 0.3 and 3 mm.

As a preferred embodiment of the above various embodiments, the insulator has a length of between 3 and 10 mm.

Preferably, in the above various embodiments, the length of the needle portion exposed to the insulator portion is between 3 and 10 mm. As a preferred embodiment of the above various embodiments, the portion of the needle body exposing the insulator includes a first portion of the same diameter and a second portion that is tapered, the second portion having a length of between 3 and 8 mm.

The thermocoagulation needle according to the present invention can well control the coagulation position of the subcutaneous tissue when treating the underarm odor, avoiding the wound on the surface of the skin, and does not cause inconvenience to the patient after surgery. DRAWINGS Figure 1 is a structural view showing a specific embodiment of the thermocoagulation needle of the present invention;

Figure 2 is a partial enlarged view of a specific embodiment of the thermocoagulation needle of the present invention;

Figure 3 is a comparison of the effects of testing with a thermocoagulation needle according to the present invention and an existing thermocoagulation needle. detailed description

The inventor unexpectedly found in an experiment that when there is an insulating sleeve at the position where the needle is close to the handle, the effect of the treatment of body odor can be miraculously transformed beyond the desired direction, that is, the tissue solidification no longer starts from the skin table. It starts with the inside of the subcutaneous tissue. The inventors have thus obtained the present invention.

In a general aspect of the invention, a thermocoagulation needle is provided, comprising a handle and a needle body, the needle body being provided with a length of insulator adjacent to the handle. The thermocoagulation needle of the present invention is used in conjunction with a radio frequency generator or a microwave generator.

In a specific embodiment, the handle of the thermocoagulation needle is provided with a coaxial cable, the coaxial cable comprising an inner conductor, an outer conductor, and an insulating medium interposed between the inner conductor and the outer conductor; the needle body and the inner body The conductor is integrally formed and extends from one end of the handle. The other end of the handle electrically connects the coaxial cable to the RF generator or microwave generator via an NBC connector.

1 shows an exemplary embodiment of a thermosetting needle of the present invention, in which a coaxial cable 10 is provided in a handle 1, the coaxial cable comprising an inner conductor 12 and an outer conductor 14, and an insulating medium interposed between the inner conductor and the outer conductor 16, the needle 2 is part of the inner conductor 12. The needle body 2 is provided with a length of insulator 3 at a portion adjacent to the handle 1. In the present embodiment, the insulator 3 and the needle 2 are fixedly coupled together. Further, the insulator 3 is actually formed integrally with the insulating medium 16, and the former extends from the end of the coaxial cable.

The present invention may also have other embodiments. For example, the insulator 3 may be separated from the coaxial cable, that is, it is separated from the insulating medium 16 between the inner conductor and the outer conductor and fixed at a proper position of the needle body; the insulator 3 is also It can be a detachable sleeve that is temporarily placed over the needle body 2 during surgery. In the case of the latter two variants, the length of the insulator, the needle body, and the position of the insulator in the needle body can be set so that the portion of the needle body 2 that can be inserted into the human body has a suitable length (the insulator 3 is located in the human body when inserted) Externally, the portion is usually no more than 13 mm, in particular no more than 10 mm in length, which is usually chosen according to the depth of the apocrine glands.

Embodiments using a detachable cannula are advantageous in some cases, as it is possible that different groups of apocrine glands have different depths. In this case, sleeves of different lengths can be selected according to the characteristics of different groups to control the needle body. The length of the part is inserted.

In the present invention, the outer diameter of the insulator 3 is preferably between 0.3 and 3 mm. If the outer diameter is less than 0.3 mm, the thickness of the insulator is too small, which lowers the selectivity to the solidification position of the tissue, and the outer diameter exceeds 3 mm, which is disadvantageous for the operation treatment. In an exemplary embodiment of the invention, the outer diameter of the insulator is between 0.5 and 2.8 mm, between 1.0 and 2, 8 mm, between 1.5 and 2.8 mm, and between 1.8 and 3.0 mm.

In the case of the embodiment shown in Figure 1, the length of the insulator is between 2 and 15 mm, preferably between 3 and 10 mm, more preferably between 5 and 8 mm. It has been experimentally confirmed that, in this preferred order, the accuracy of control of the coagulation site is gradually increased. The length of the needle body 2 is not more than 20 mm, wherein the length of the needle body 2 exposing the insulator portion (the plungable portion) is preferably between 3 and 13 mm, more preferably between 5 and 10. In a preferred embodiment of the invention, as shown in Figure 2, the portion of the needle body 2 exposing the insulator includes a first portion 21 of the same diameter and a second portion 22 that is tapered, the length of the second portion 22 being Between 3-8 mm, preferably between 5-7 mm. This second embodiment, which is a slow transition from coarse to fine, shows an advantage over conventional needles of the same diameter. The conventional needle body only has a wedge-shaped surface at the end to facilitate the insertion of the needle, and the rest is the same diameter. Compared with the same diameter setting, the needle body of the present invention has a higher impedance in the thinned portion, and has the greatest impedance at the end of the needle body, and is easy to rapidly heat up, so that the position of the needle, that is, the size of the sweat gland or hair follicle The location is rapidly generating high temperatures, making the solidified area almost spherical.

The diameter of the needle end of the needle of the thermocoagulation needle of the present invention is generally between 0.2 and 0.8 mm, and the thermocoagulation needle can be used in combination with a radio frequency generator or a microwave generator. The output power of these generators is typically around 25 w, and those skilled in the art can also select other suitable powers through a limited number of tests.

Fig. 3 is a view showing the effect of the test using the heat setting needle according to the present invention and the existing heat setting needle. The test was carried out on a piece of pork, where A is a thermocoagulation needle according to the invention and B is an existing thermocoagulation needle. The thermocoagulation needle was inserted to a depth of 6 mm, and the thermocoagulation needle was electrically connected to the SurgiNeer B90 microwave generator manufactured by the applicant, and the output power was 25 W. As can be seen from Fig. 3, for the thermocoagulated needle A, coagulation occurs at the end portion of the needle body, and the surface of the skin does not solidify. For the thermocoagulation needle B, coagulation starts from the surface of the skin.

The above description of the specific embodiments will be able to fully disclose the general features of the present invention, so that others can easily make adjustments and/or adaptations to these specific embodiments for specific applications by means of the prior art without departing from the invention. The scope and thus the adaptations and modifications are to be considered as equivalents to the embodiments disclosed in the invention.

Claims

Claim

1. A thermocoagulation needle, comprising:

a handle (1), wherein a coaxial cable (10) is provided, the coaxial cable comprising an inner conductor (12) and an outer conductor (14), and between the inner conductor (12) and the outer conductor (14) Insulating medium (16), and

a needle body (2) connected to the inner conductor (12) and extending from one end of the handle (1), characterized in that the needle body (2) is adjacent to the handle (1) The portion is sleeved with a length of insulator (3), and the length of the needle body (2) does not exceed 20 mm.

2. The thermocoagulation needle according to claim 1, wherein the insulator (3) is fixedly connected to the coaxial cable.

3. The thermocoagulation needle according to claim 2, wherein the outer diameter of the insulator (3) is between 0.3-3 mm, 0.5-2.8 mm, 1.0-2, 8 mm, 1.5- Between 2.8mm or between 1.8-3.0mm.

4. The thermocoagulation needle according to claim 2, characterized in that the length of the insulator (3) is between 3 and 10 mm.

5. The thermocoagulation needle according to claim 2, wherein the needle body exposes the insulator portion to a length of between 3 and 10 mm.

6. The thermocoagulation needle according to claim 2, wherein the portion of the needle body exposing the insulator comprises a first portion (21) of the same diameter and a second portion (22) that is tapered, The length of the second part (22) is between 3 and 8 mm.