CN114452077A - Hot-expanding cold-therapy device for anus - Google Patents
Hot-expanding cold-therapy device for anus Download PDFInfo
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- CN114452077A CN114452077A CN202210062373.6A CN202210062373A CN114452077A CN 114452077 A CN114452077 A CN 114452077A CN 202210062373 A CN202210062373 A CN 202210062373A CN 114452077 A CN114452077 A CN 114452077A
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- 238000002560 therapeutic procedure Methods 0.000 title claims abstract description 27
- 210000000436 anus Anatomy 0.000 title claims abstract description 14
- 239000004065 semiconductor Substances 0.000 claims abstract description 43
- 238000005057 refrigeration Methods 0.000 claims abstract description 29
- 239000007788 liquid Substances 0.000 claims description 11
- 238000010030 laminating Methods 0.000 claims description 8
- 238000010521 absorption reaction Methods 0.000 claims description 7
- 238000009835 boiling Methods 0.000 claims description 5
- 208000014617 hemorrhoid Diseases 0.000 abstract description 11
- 239000008280 blood Substances 0.000 abstract description 5
- 210000004369 blood Anatomy 0.000 abstract description 5
- 206010002176 Anal stenosis Diseases 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000009792 diffusion process Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 8
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 6
- 210000004204 blood vessel Anatomy 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 4
- 210000000936 intestine Anatomy 0.000 description 4
- 206010053615 Thermal burn Diseases 0.000 description 3
- 230000036760 body temperature Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 206010040007 Sense of oppression Diseases 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 208000031481 Pathologic Constriction Diseases 0.000 description 1
- 230000005679 Peltier effect Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- -1 for example Chemical compound 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 210000004877 mucosa Anatomy 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000001575 pathological effect Effects 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000001148 spastic effect Effects 0.000 description 1
- 208000037804 stenosis Diseases 0.000 description 1
- 230000036262 stenosis Effects 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
- A61F7/12—Devices for heating or cooling internal body cavities
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
- A61F7/007—Heating or cooling appliances for medical or therapeutic treatment of the human body characterised by electric heating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B21/00—Machines, plants or systems, using electric or magnetic effects
- F25B21/02—Machines, plants or systems, using electric or magnetic effects using Peltier effect; using Nernst-Ettinghausen effect
- F25B21/04—Machines, plants or systems, using electric or magnetic effects using Peltier effect; using Nernst-Ettinghausen effect reversible
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
- A61F7/12—Devices for heating or cooling internal body cavities
- A61F2007/126—Devices for heating or cooling internal body cavities for invasive application, e.g. for introducing into blood vessels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2321/00—Details of machines, plants or systems, using electric or magnetic effects
- F25B2321/02—Details of machines, plants or systems, using electric or magnetic effects using Peltier effects; using Nernst-Ettinghausen effects
- F25B2321/025—Removal of heat
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Animal Behavior & Ethology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Thermotherapy And Cooling Therapy Devices (AREA)
Abstract
The invention discloses a thermal dilatation cold therapy device for anus, which relates to the technical field of anorectal medical instruments and comprises a shell, wherein the shell adopts a hollow structure, and is formed by integrally forming a treatment section, a convex section and a thermal dilatation section; the semiconductor refrigerating piece is arranged in the protruding section, a first temperature control layer attached to one end of the semiconductor refrigerating piece is arranged in the treatment section, and a second temperature control layer attached to the other end of the semiconductor refrigerating piece is arranged in the thermal expansion section. The invention adopts the heat transfer design of the semiconductor refrigeration sheet, improves the disposable medical ice cap in the traditional technology, and can carry out heat-diffusion cold treatment by absorbing heat at one end and releasing heat at the other end of the semiconductor refrigeration sheet, thereby playing a role in treatment on one hand and improving the conditions of anal stenosis and the like caused by haemorrhoids and blood stasis on the other hand.
Description
Technical Field
The invention relates to the technical field of anorectal medical instruments, in particular to a thermal dilatation cold therapy device for anus.
Background
Hemorrhoids are soft masses caused by pathological varicose and blood stasis of blood vessels under the rectal mucosa and blood vessels under the anal skin. In the existing hemorrhoids treatment, a cold therapy treatment mode appears, for example, a medical ice cap shown in fig. 1, the outer shell is made of non-toxic high polymer material, and high-efficiency chemical controllable condensing agent is filled inside the medical ice cap to carry out low-temperature cold therapy, if the cold therapy is directly adopted, on one hand, the stimulation and contraction are inconvenient to position a plurality of hemorrhoids, on the other hand, the cold therapy can stimulate blood vessels in the hemorrhoids to be spastic, so that the hemorrhoids blood stasis is aggravated, the anus is narrowed, and other situations occur, and therefore the problems of the anus being easily narrowed by the cold therapy and the like need to be solved urgently.
Disclosure of Invention
The invention aims to solve the problems and provides a thermal dilatation cold therapy device for anus.
In order to achieve the purpose, the invention adopts the following technical scheme:
a thermal dilatation cold therapy device for an anus comprises a shell, wherein the shell is of a hollow structure and is formed by integrally forming a treatment section, a protruding section and a thermal dilatation section, and the protruding section is positioned between the treatment section and the thermal dilatation section;
the semiconductor refrigerating piece is arranged in the protruding section, the first temperature control layer attached to one end of the semiconductor refrigerating piece is arranged in the treatment section, and the second temperature control layer attached to the other end of the semiconductor refrigerating piece is arranged in the thermal expansion section;
the semiconductor refrigeration piece lets in forward current, the semiconductor refrigeration piece absorbs heat with the one end of first accuse temperature layer laminating, the semiconductor refrigeration piece lets in reverse current, the semiconductor refrigeration piece absorbs heat with the one end of second accuse temperature layer laminating.
Optionally, an intermediate layer is attached to the inner wall of the treatment section.
Optionally, the two ends of the semiconductor refrigeration piece are respectively attached with a heat conducting piece, one of the heat conducting pieces is directly attached with the first temperature control layer, and the other heat conducting piece is attached with the second temperature control layer through the heat conducting pipe and the heat conducting piece.
Optionally, the first temperature control layer and the second temperature control layer are both composed of a sealed heat conduction shell and temperature control liquid located in the sealed heat conduction shell, and the temperature control liquid is filled in the sealed heat conduction shell in a seamless manner, wherein the temperature control liquid is medical solvent with a boiling point not higher than 40 ℃.
Compared with the prior art, the invention has the following advantages:
the invention adopts the design of heat transfer and cold therapy of the semiconductor refrigeration sheet, improves the disposable medical ice cap in the traditional technology, and can carry out heat diffusion and cold therapy by absorbing heat at one end and releasing heat at the other end of the semiconductor refrigeration sheet, thereby playing a role in treatment on one hand and improving the conditions of anus stenosis and the like caused by haemorrhoids and blood stasis on the other hand.
The invention adopts the design of the temperature control layer, can limit the highest temperature when the heat expansion section is contacted with the anus and the intestine in the heat transfer process of the semiconductor refrigeration sheet, and can absorb the temperature of the hot end through the evaporation heat absorption function in the heat expansion section, thereby leading the cold therapy section 1a to reach lower temperature and reach the temperature required by cold therapy.
Compared with the disposable medical ice cap in the traditional technology, the invention can improve the conditions of anal stenosis and the like caused by haemorrhoids blood stasis through the thermal expansion section; the heat absorption and the heat release are controlled by controlling the current, so that the use is more flexible; scald protection is achieved by arranging the temperature control layer, the cold treatment section can reach lower temperature, and the problem that the semiconductor refrigeration sheet is applied to cold treatment of hemorrhoids is solved.
Drawings
FIG. 1 is a schematic structural view of a medical ice cap in the prior art;
FIG. 2 is a schematic structural view of the housing of the present invention;
FIG. 3 is a schematic view of the overall structure of the present invention;
fig. 4 is a schematic view of the invention after connecting the heat dissipation fins.
In the figure: the heat radiation treatment device comprises a shell 1, a treatment section 1a, a convex section 1b, a heat expansion section 1c, an intermediate layer 2, a first temperature control layer 3, a heat conducting sheet 4, a semiconductor refrigerating sheet 5, a heat conducting pipe 6, a heat conducting sheet 7, a second temperature control layer 8, a lead 9 and a heat radiation fin 10.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 2-4, the anal thermodiffusion cold therapy device comprises a shell 1, wherein the shell 1 is of a hollow structure, and the outer surface of the shell 1 is prevented from adopting a smooth surface, so that the anal thermodiffusion cold therapy device has lower friction.
Referring to fig. 2, in the present embodiment, the housing 1 is formed by integrally molding three parts, namely, a treatment section 1a, a convex section 1b and a thermal expansion section 1c, wherein the convex section 1b is located between the treatment section 1a and the thermal expansion section 1 c.
Wherein, the treatment section 1a is as the main part of cold therapy, carries out the cold therapy of haemorrhoids through continuous heat absorption, and as preferred, laminating on the inner wall of treatment section 1a has intermediate level 2, and intermediate level 2 can adopt macromolecular material, and it has mainly played the effect of stereotyping, because the medical ice cap that sets up treatment section 1a among the first temperature control layer 3 is softer than the traditional technique, can avoid the condition such as sunken.
And protruding section 1 b's setting has played a fixed and isolated effect, through the structure of little protruding, can carry out a oppression to the anus intestines tissue, can play the fixed effect of movement to the assigned position oppression on the one hand, also can separate protruding section 1 b's both ends.
The thermal expansion section 1c plays a role of thermal expansion, can improve the circulation of blood vessels in the hemorrhoids, and avoids the occurrence of anal stenosis and other conditions.
The semiconductor refrigerating sheet 5 is arranged in the convex section 1b, and under the action of the Peltier effect, the semiconductor refrigerating sheet 5 can transfer heat from the treatment section 1a to the thermal expansion section 1c, so that two operations of cold treatment and thermal expansion can be simultaneously met, and the temperature can be controlled by controlling current.
Be provided with the first temperature control layer 3 with the laminating of 5 one ends of semiconductor refrigeration piece in the treatment section 1a, be provided with the second temperature control layer 8 with the laminating of 5 other ends of semiconductor refrigeration piece in the section 1c that expands of heat, though can control the heat absorption of semiconductor refrigeration piece 5 through the mode of control current and release heat, but semiconductor refrigeration piece 5 is a heat transfer's instrument in essence, when there is the electric current to pass in the thermocouple centering that a N type semiconductor material and a P type semiconductor material are linked, will produce the heat transfer between the both ends, the heat will be followed one end and shifted to the other end to produce the difference in temperature and form the cold and hot junction. Because the human body temperature is more than 30 ℃, the reference temperature of the hot end of the semiconductor refrigeration piece 5 is close to the body temperature, in the subsequent heat release process, the temperature of the heat expansion section 1c is easily higher than 40 ℃, scalding is caused, and the temperature difference of the cold end and the hot end can restrict the temperature of the cold end of the semiconductor refrigeration piece 5, so that the temperature of the cold treatment section 1a cannot reach the cold treatment effect, therefore, through arranging the first temperature control layer 3 and the second temperature control layer 8, on one hand, the highest temperature when the semiconductor refrigeration piece is in contact with the anus and the intestine can be limited, on the other hand, the temperature of the hot end can be absorbed through the internal evaporation heat absorption effect, and the cold treatment section 1a can reach lower temperature.
The first temperature control layer 3 and the second temperature control layer 8 are both composed of a sealed heat conduction shell and temperature control liquid positioned in the sealed heat conduction shell, and the temperature control liquid is filled in the sealed heat conduction shell in a seamless mode, wherein the temperature control liquid is medical solvent with the boiling point not higher than 40 ℃.
In this embodiment, the temperature control liquid is n-pentane, for example, n-pentane with a boiling point of 36 ℃, because the heated n-pentane has a highest boiling point of 36 ℃, and the highest temperature of the human body is more than 30 ℃ due to the heat insulation of the shell 1, which is slightly lower than the body temperature of the human body, and because the distance between the treatment section 1a and the thermal expansion section 1c is not far, the great temperature difference between the treatment section 1a and the thermal expansion section 1c can be avoided, so that the temperature control protection effect is achieved, and high temperature scald caused by too high current is also avoided.
Referring to fig. 4, as heat conduction is preferred, heat conduction fins 4 are attached to both ends of the semiconductor refrigeration fin 5, the heat conduction fins 4 can be made of copper or aluminum, and have good heat conduction performance, one of the heat conduction fins 4 is directly attached to the first temperature control layer 3, the other heat conduction fin 4 is attached to the second temperature control layer 8 through a heat conduction pipe 6 and a heat conduction fin 7, the heat conduction pipe 6 is connected with a heat dissipation fin 10, the heat dissipation fin 10 can output redundant heat, the problem of heat accumulation occurring in the thermal expansion section 1c is avoided, meanwhile, when the cold end and the hot end reach a certain temperature difference, the two heat transfer amounts are equal, a balance point is reached, and the positive and negative heat transfer amounts are mutually offset. At this time, the temperature of the cold and hot ends will not change continuously, and lower treatment temperature can be achieved by using the heat dissipation fins 10.
Firstly, the semiconductor refrigeration piece 5 lets in the forward current, and the semiconductor refrigeration piece 5 absorbs heat with the one end of the first accuse temperature layer 3 laminating, and the semiconductor refrigeration piece 5 other end is exothermic for cold therapy section 1a and the hot section of expanding 1c play the effect of cold therapy and hot expanding respectively, and wherein the setting of first accuse temperature layer 3 and second accuse temperature layer 8 has played the effect of accuse temperature protection, avoids the anus intestines position scald that the electric current too high leads to, reaches certain time and finishes until cold therapy.
Then, a reverse current is introduced into the semiconductor refrigeration sheet 5, and one end of the semiconductor refrigeration sheet 5, which is attached to the second temperature control layer 8, absorbs heat, so that the heat expansion section 1c absorbs heat, and the original cold therapy section 1a releases heat.
The above description is only a preferred embodiment of the present invention, and not intended to be exhaustive or to limit the scope of the present invention, and any person skilled in the art should be able to make equivalents and modifications within the technical scope of the present invention.
Claims (4)
1. The thermal dilatation cold therapy device for the anus is characterized by comprising a shell (1), wherein the shell (1) is of a hollow structure, the shell (1) is formed by integrally forming a treatment section (1a), a convex section (1b) and a thermal dilatation section (1c), and the convex section (1b) is positioned between the treatment section (1a) and the thermal dilatation section (1 c);
a semiconductor refrigerating sheet (5) is arranged in the protruding section (1b), a first temperature control layer (3) attached to one end of the semiconductor refrigerating sheet (5) is arranged in the treatment section (1a), and a second temperature control layer (8) attached to the other end of the semiconductor refrigerating sheet (5) is arranged in the thermal expansion section (1 c);
semiconductor refrigeration piece (5) lets in forward current, the one end heat absorption of semiconductor refrigeration piece (5) and first accuse temperature layer (3) laminating, semiconductor refrigeration piece (5) lets in reverse current, the one end heat absorption of semiconductor refrigeration piece (5) and second accuse temperature layer (8) laminating.
2. The anal thermofrigid therapy device according to claim 1, wherein the inner wall of the treatment segment (1a) is attached with an intermediate layer (2).
3. The anal thermodiffusion cold therapy device according to claim 1, wherein the semiconductor refrigeration sheet (5) is attached with heat conducting sheets (4) at both ends, one of the heat conducting sheets (4) is directly attached with the first temperature control layer (3), and the other heat conducting sheet (4) is attached with the second temperature control layer (8) through the heat conducting pipe (6) and the heat conducting sheet (7).
4. The anal thermodilatation cold therapy device according to claim 1, wherein the first temperature control layer (3) and the second temperature control layer (8) are both composed of a sealed heat conduction shell and a temperature control liquid inside the sealed heat conduction shell, and the temperature control liquid is filled in the sealed heat conduction shell without gaps, wherein the temperature control liquid is a liquid with a boiling point not higher than 40 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210062373.6A CN114452077B (en) | 2022-01-19 | 2022-01-19 | Anus is with hot expansion cold therapy device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210062373.6A CN114452077B (en) | 2022-01-19 | 2022-01-19 | Anus is with hot expansion cold therapy device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114452077A true CN114452077A (en) | 2022-05-10 |
| CN114452077B CN114452077B (en) | 2023-11-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210062373.6A Active CN114452077B (en) | 2022-01-19 | 2022-01-19 | Anus is with hot expansion cold therapy device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114452077B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115778674A (en) * | 2023-02-06 | 2023-03-14 | 淄博恒智威通医疗器械科技有限公司 | Production process of medical ice cap |
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| IL108744A0 (en) * | 1994-02-22 | 1994-05-30 | Trop Life Ltd | Cylindrical cooling device for therapeutic treatment of hemorrhoids |
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| CN213641432U (en) * | 2020-07-02 | 2021-07-09 | 浙江大学医学院附属儿童医院 | Medical equipment for anus dilatation treatment of anus blocking infant patient |
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2022
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4563182A (en) * | 1984-11-01 | 1986-01-07 | Health Products Research, Inc. | Rectal insert |
| CN85102400A (en) * | 1985-04-01 | 1987-01-17 | 南京大学 | Presoaked Cold Ejection Needle for Internal Hemorrhoids |
| CN2164268Y (en) * | 1993-01-15 | 1994-05-11 | 黄树祥 | Stepless adjusting and controlling anus dilator |
| IL108744A0 (en) * | 1994-02-22 | 1994-05-30 | Trop Life Ltd | Cylindrical cooling device for therapeutic treatment of hemorrhoids |
| WO2003003968A1 (en) * | 2001-07-05 | 2003-01-16 | Jewoo Electronics Co., Ltd. | Massage chair having perineum massage device |
| FR2855400A1 (en) * | 2003-05-30 | 2004-12-03 | R & D Pharma | Device for treating hemorrhoids, by insertion into the anus, provides both a cooling effect and delivers a topical composition |
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| US20180289531A1 (en) * | 2017-04-10 | 2018-10-11 | Relief Technologies, Inc. | Cooling devices |
| CN106913416A (en) * | 2017-04-21 | 2017-07-04 | 李永腾 | A kind of cold and hot transformation treatment instrument |
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