CN107981898A - The intraperitoneal controllable minimally invasive system of adjustable strong electromagnetic with cooling device - Google Patents
The intraperitoneal controllable minimally invasive system of adjustable strong electromagnetic with cooling device Download PDFInfo
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- CN107981898A CN107981898A CN201711364408.7A CN201711364408A CN107981898A CN 107981898 A CN107981898 A CN 107981898A CN 201711364408 A CN201711364408 A CN 201711364408A CN 107981898 A CN107981898 A CN 107981898A
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- electromagnet
- cooling device
- intraperitoneal
- controllable
- cooling
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/0281—Abdominal wall lifters
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/0218—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors for minimally invasive surgery
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/0293—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors with ring member to support retractor elements
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/08—Accessories or related features not otherwise provided for
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/08—Accessories or related features not otherwise provided for
- A61B2090/0801—Prevention of accidental cutting or pricking
- A61B2090/08021—Prevention of accidental cutting or pricking of the patient or his organs
Abstract
The invention discloses a kind of intraperitoneal controllable minimally invasive system of adjustable strong electromagnetic with cooling device, it is related to medical instruments field, is made of electromagnetic control apparatus, electromagnet, electromagnet cooling device, soft magnetic material and supporting rack；Electromagnet cooling device is used to cool down the electromagnet during use, including magnetism servo-electric motor water-cooling and heat insulating mattress, and magnetism servo-electric motor water-cooling is around the outside for being located at electromagnet and connects cooling water pump, and heat insulating mattress is arranged on the working face on the downside of electromagnet.The present invention can be directly anchored on operating table, be not take up the space of operating room；Use the source of pulling force needed for electromagnet and soft magnetic material as lifting stomach wall so that the size of pulling force can be adjusted, tissue damage caused by avoiding suction excessive；Skin and tissue injury are minimum, beneficial to postoperative rehabilitation.In addition this device can be applied not only to intraperitoneal operation, other are built the endoscope-assistant surgery such as operation such as neck device for endoscopic thyroid of the chamber as principle using body interacvity air-filling and can also use.
Description
Technical field
The present invention relates to medical instruments field, and in particular to a kind of adjustable strong electromagnetic with cooling device is intraperitoneal controllable
Minimally invasive system.
Background technology
Laparoscopic surgery is the invasive methods that a new development is got up, and is an inexorable trend of following operation method, mesh
Preceding clinically state-of-the-art robotic surgery technology is also a type of endoscope-assistant surgery.Conventional laparoscopic surgery is to utilize gas
Body (CO2) closed abdominal cavity is filled with, manufacture operative space is operated with completing laparoscopic surgery, and abdominal cavity is in whole surgical procedure
The high pressure conditions of 12-15mmHg, may cause human body, such as pneumoderm, cardio-pulmonary function exception, abdominal wall blood vessel constriction, high-carbon
Acidaemia and acid poisoning and shoulder such as are ached at many side effects.Meanwhile CO2Pneumoperitoneum must use expensive pneumoperitoneum apparatus and
The CO of high-purity2Gas, and pneumoperitoneum must be performed the operation using general anesthesia, to there is the patient of general anesthesia contraindication not implement
Pneumoperitoneum is performed the operation, these conditions limit the application range of laparoscopic surgery.In view of CO2Many complication existing for pneumoperitoneum and right
The harmful effect of human body, beginning of the nineties in last century people start to explore it is various exempt from pneumoperitoneum technology, to overcome CO2The defects of pneumoperitoneum.
Gas-less laparoscopy technology is also known as gasless laparoscopic technology, its principle be preceding stomach wall lifted using external force or
Suspend in midair to manufacture operative space, the seal in abdominal cavity is not required.It is more existing to exempt from pneumoperitoneum abdominal cavity coelosis drawing device, it is big absolutely
Majority is lifted using machinery or suspension method, i.e.,：Several notch are cut in patient abdomen, drag hook or steel wire rope are inserted in abdomen,
It is exterior that stomach wall lifting is got up by a height-adjustable mechanism, create operative space.This mode seems simple, actually
It is not small to patient's injury of abdominal wall, skin lacerations wound is easy to cause, there are the complicated by postoperative such as subcutaneous hemorrhage, hemotoncus, point of puncture infection
Disease, in addition its lift power size be not easy to adjust.Such as：Chinese patent ZL99250043.5, patent name：Abdominal wall lifting device.The dress
Put and stretched into using retractable fan-shaped drag hook in abdominal cavity of patients, lifted stomach wall to create operative space by hand-operated mechanism, although
It can realize the stomach wall of lifting patient, but it can cause wound to the internal abdominal wall of patient, be unfavorable for the post-operative recovery of patient,
And it lifts power size and is not easy to adjust.Therefore, existing human body, which exempts from pneumoperitoneum abdominal cavity cavitation device, can not also fully meet laparoscope
Operation requires.In addition the overwhelming majority exempt from pneumoperitoneum apparatus there are principle defect for example skin vacuum attraction lifting etc. scheme, because
It can not regulate and control stomach wall pulling force, may result in skin and the huge wound of stomach wall；Also partly exempt from pneumoperitoneum design principle because it is carried
Pulling force is smaller and relatively fixed, can not increase its value of thrust as needed, therefore is unable to reach the actual effect that lifting stomach wall builds chamber.
So current other, which exempt from the research and development of pneumoperitoneum abdominal wall lifting device, only rests on theoretical and drawing stage, they can not regulate and control carrying for pulling force
Drawing scheme and equipment not yet reality are clinically applied.
It should be noted that the introduction to technical background above be intended merely to the convenient technical solution to the application carry out it is clear,
Complete explanation, and facilitate the understanding of those skilled in the art and illustrate.Cannot merely because these schemes the application's
Background section is set forth and thinks that above-mentioned technical proposal is known to those skilled in the art.
The content of the invention
In view of the drawbacks described above of the prior art, the technical problems to be solved by the invention are to provide a kind of band cooling device
The intraperitoneal controllable minimally invasive system of adjustable strong electromagnetic, on the basis of pneumoperitoneum abdominal cavity coelosis is exempted from realization, avoid and patient made
Into additional injury, be conducive to the postoperative rehabilitation of patient.
The present invention is for the functional requirement for exempting from pneumoperitoneum abdominal cavity coelosis, it is proposed that a kind of to exempt from pneumoperitoneum abdominal cavity based on Magnetic force tracting
The technical principle scheme of coelosis：By the operative incision on stomach wall, soft magnetic material is inserted in abdominal cavity of patients and arranged, outside
Portion attracts intraperitoneal magnetic absorbing mass using the adjustable electromagnet of voltage, by the voltage of regulating magnet with changing intraperitoneal magnetic
The quantity of body is inhaled, achievees the purpose that to change electromagnet suction size, and utilize external electrical magnet and the magnetic attraction of soft magnetic material
Stomach wall lifting is got up to create operative space, so as to reduce operation damage caused by patient's stomach wall, avoids traditional pneumoperitoneum coelosis
The complication of method.
To achieve the above object, the present invention provides a kind of adjustable strong electromagnetic with cooling device is intraperitoneal controllable minimally invasive
System, it is characterized in that：The system is by electromagnetic control apparatus, electromagnet, electromagnet cooling device, soft magnetic material and supporting rack
Composition；The soft magnetic material is used to insert in abdominal cavity of patients, interacts and is produced needed for lifting stomach wall with the electromagnet
Magnetic attraction；Support frame as described above connects electromagnet, provides and supports and for lifting stomach wall for electromagnet；
Wherein：
The electromagnetic control apparatus includes power supply module, display module, voltage regulating module and temperature measurement module, and power supply module is electricity
Magnet is powered, and voltage regulating module adjusts the voltage of power supply module, and temperature measurement module measures the temperature of electromagnet, display module display power supply
The voltage of module；
The electromagnet cooling device is used to cool down the electromagnet during use, including magnetism servo-electric motor water-cooling and heat-insulated
Gasket, magnetism servo-electric motor water-cooling is around the outside for being located at electromagnet and connects cooling water pump, and heat insulating mattress is arranged on the work on the downside of electromagnet
On face.
The outside of the soft magnetic material is equipped with white zine electrodeposited coating and epoxy resin layer successively from the inside to the outside.If used in abdomen
Be permanent magnet, then it is little to change influence of the voltage to magnetic attraction of electromagnet, so present invention employs soft magnetic material, more
It is easy to control its magnetic attraction.
The heat insulating mattress is alumina silicate high temperature insulating gasket.
The soft magnetic material has multiple, and each soft magnetic material is made of multiple magnetic cell cubes；
The magnetic cell cube can be rectangle, four magnetic cell cube matrix pattern one square soft magnetisms of arrangement form
Property material, the inside angle part of multiple magnetic cell cubes are connected by connecting line；
Or the magnetic cell cube is rectangle, two magnetic cell cubes are superimposed up and down and rotation connection composition one is soft
Magnetic material.
The soft magnetic material has multiple, and each soft magnetic material is foldable structure.
Other shapes also and are as needed made in soft magnetic material.
Support frame as described above includes two sliding blocks, two montants, a cross bar, two three-way pipes, two elongation bars and two
Universal joint, wherein being fixed in two montant lower end insertion sliding blocks and by trip bolt；Cross bar is sleeved on two and erects up or down
Fastened on bar and by screw；String has two three-way pipes on cross bar, and three-way pipe is fixed by trip bolt；Three-way pipe passes through universal
Section is connected with one end of elongation bar, and the other end of elongation bar is connected with electromagnet.This supporting rack can also use operating room existing
Abdominal cavity retractor rod racking device.
The outside of the electromagnet is equipped with stainless steel casing, and magnetism servo-electric motor water-cooling is around the outside for being located at stainless steel casing.
The outside of the stainless steel casing is equipped with spiral helicine radiating fin, and magnetism servo-electric motor water-cooling is around being located between radiating fin
Silica gel heat exchanger tube；
It is additionally provided with a plastic housing on the outside of the stainless steel casing, the cylindrical shape for upper and lower ends opening of plastic housing,
Radiating fin and silica gel heat exchanger tube are arranged between plastic housing and stainless steel casing, and the inner side of plastic housing is equipped with to be connected with radiating fin
The clamping mechanism connect.
The clamping mechanism includes being eccentrically set on multiple clamping muscle on the inside of plastic housing, is clamped one end and the plastic housing of muscle
Inner wall integrally connected, the other end tilt to radially inner side and are equipped with the clamping protrusion of axial direction, and clamping is correspondingly provided with radiating fin
Groove.
A diameter of 58mm of the electromagnet, is highly 33mm, and the internal diameter of silica gel heat exchanger tube is 8mm, outside diameter 11mm.
By using novel design method, the invention has the advantages that：It is simple in structure, it can be directly anchored to
On operating table, the space of operating room is not take up, operating table can be easily separated after operation；Use electromagnet and soft
Source of the magnetic material as pulling force needed for lifting stomach wall so that the size of pulling force can be adjusted；Skin and abdominal wall tissue wound
It is minimum, beneficial to postoperative rehabilitation.In addition this device can be applied not only to laparoscopic surgery, other body interacvity air-fillings build chamber operation such as neck
The operations such as portion's device for endoscopic thyroid can also use.
Specifically, the present invention at the corresponding interior stomach wall of lesion using by disposing soft magnetic material (such as iron plate, nickel sheet
Deng), while electromagnet is disposed at the corresponding outer stomach wall of lesion, lifted using the attraction between electromagnet and magnetic material
Stomach wall, so as to fulfill human abdominal cavity coelosis, operating space is provided for laparoscopic surgery, if pneumoperitoneum formula people can be used to avoid producing
Body abdominal cavity cavitation device and may caused by complication (such as high-carbon hematic acid disease, pneumoderm, arrhythmia cordis).In addition,
The program will not cause hook to draw wound the skin of patient as suspension type human abdominal cavity cavitation device, for skin is thin, abdomen
For the patient of wall relaxation or plumpness, this scheme is still elected to, expands the scope of application of art formula.
In the program, external electrical magnetic pull size can be controlled by adjusting size of current.Final human abdominal cavity
Will be more open into cavity space, surgical field of view is clear, and the size of attraction and the volume into cavity space etc. are joined in practical application
Number, will be obtained by further testing.In addition, device assembly only includes magnetic material, electromagnet and fixation in the program
The stent of electromagnet, whole device is simple, operation is easy, and device takes up space less, is unlikely to influence other operating theater instruments
Arrangement.And exterior and internal magnetic equipment can be increased or decreased as needed, application is more flexible.
, for a long time, can there are obvious fever phenomenon after electromagnet is powered.And to obtain preferable lifting stomach wall effect
Fruit, electromagnet are preferably close to the abdominal skin of patient, the distance between shortening and magnetic material, increase magnetic suction between the two
Gravitation.This just directly results in electromagnet and causes thermal burn to patient abdomen epidermis.Problem in this regard, present invention design are heat-insulated
Add magnetism servo-electric motor water-cooling heat, solve electromagnet heating problem.
With reference to following explanation and attached drawing, the particular implementation of the application is disclose in detail, specifies the original of the application
Reason can be in a manner of adopted.It should be understood that presently filed embodiment is not so limited in scope.In appended power
In the range of the spirit and terms that profit requires, presently filed embodiment includes many changes, modifications and is equal.
The feature for describing and/or showing for a kind of embodiment can be in a manner of same or similar one or more
Used in a other embodiment, it is combined with the feature in other embodiment, or substitute the feature in other embodiment.
It should be emphasized that term "comprises/comprising" refers to the presence of feature, one integral piece, step or component when being used herein, but simultaneously
It is not excluded for the presence or additional of one or more further features, one integral piece, step or component.
Brief description of the drawings
Included attached drawing is used for providing being further understood from the embodiment of the present application, which constitutes one of specification
Point, for illustrating presently filed embodiment, and the principle for the explaination the application that comes together with word description.Under it should be evident that
Attached drawing in the description of face is only some embodiments of the present application, for those of ordinary skill in the art, is not paying wound
On the premise of the property made is laborious, other attached drawings can also be obtained according to these attached drawings.In the accompanying drawings：
Fig. 1 is the structure diagram of the embodiment of the present invention one.
Fig. 2 is the structure diagram of electromagnet and silica gel heat exchanger tube.
Fig. 3 is electromagnet and soft magnetic material partial schematic diagram.
Figure 4 and 5 are the structure diagram of built-in magnetically attractive iron in the embodiment of the present invention two.
Fig. 6 is the schematic diagram of electromagnet in the embodiment of the present invention three,
Fig. 7 is the sectional view of three kinds of electromagnet of embodiment.
Wherein：1- electromagnetic control apparatus；2- soft magnetic materials；3- electromagnet；4- elongation bars；5- universal joints；6- three-way pipes；
7- cross bars；The first trip bolts of 8-；The second trip bolts of 9-；10- montants；11- silica gel heat exchanger tubes；12- sliding blocks；13- the 3rd is tight
Gu screw；14- cooling water pumps；15- is heat-insulated；16- is clamped muscle；17- clampings are raised；18- stainless steel casings；19- radiating fins；
20- plastic housings；201- magnetic cell cubes.
Embodiment
It is in order to make those skilled in the art better understand the technical solutions in the application, real below in conjunction with the application
The attached drawing in example is applied, the technical solution in the embodiment of the present application is clearly and completely described, it is clear that described implementation
Example is merely a part but not all of the embodiments of the present application.It is common based on the embodiment in the application, this area
All other embodiment that technical staff is obtained without making creative work, should all belong to the application protection
Scope.
Referring to Fig. 1~2, the intraperitoneal controllable minimally invasive system of the adjustable strong electromagnetic with cooling device of the invention is by electromagnetism control
Device 1, electromagnet 3, electromagnet cooling device, soft magnetic material 2 and supporting rack composition processed；Soft magnetic material 2 is used to insert trouble
Person is intraperitoneal, and interact the magnetic attraction produced needed for lifting stomach wall with electromagnet 3；Supporting rack connects electromagnet 3, is electromagnet
3 provide support and for lifting stomach wall.
Supporting rack includes two elongation bars 4 and two of three-way pipe 6, two of cross bar 7, two of montant 10, one of sliding block 12, two
A universal joint 5, wherein being fixed in two 10 lower end of montant insertion sliding blocks 12 and by trip bolt；Cross bar 7 covers up or down
Fastened on two montants 10 and by screw；String has two three-way pipes 6 on cross bar 7, and three-way pipe 6 is fixed by trip bolt；
Three-way pipe 6 is connected by universal joint 5 with one end of elongation bar 4, and the other end of elongation bar 4 is connected with electromagnet 3.
Electromagnetic control apparatus 1 includes power supply module, display module, voltage regulating module and temperature measurement module, and power supply module is electromagnetism
Iron 3 is powered, and voltage regulating module adjusts the voltage of power supply module, and temperature measurement module measures the temperature of electromagnet 3, display module display power supply
The voltage of module；Electromagnet cooling device be used for the electromagnet 3 during use is cooled down, including silica gel heat exchanger tube and every
Heat pad piece 15, silica gel heat exchanger tube is around the outside for being located at electromagnet 3 and connects cooling water pump 14, and heat insulating mattress 15 is arranged on electromagnet
On the working face of 3 downsides.
The fever of electromagnet 3 is mainly as caused by the resistance loss of coil.When electromagnet 3 is in closure state,
Joule heat is produced in coil, coil transfers heat to iron core, pole shoe, permanent magnet, yoke by coil rack, electrical adhesive tape,
Distributed heat to finally by permanent magnet and yoke in surrounding environment.
Reach stable temperature rise to coil when being initially located in closure state from electromagnet 3, according to temperature field analysis, coil
Resistance caused by heat outwards transmitted by 4 paths：
Path 1:Heat reaches iron by reaching the air-gap between iron core and skeleton on the inside of the coil rack of iron core
It is divided into two-way again after core, is delivered to pole shoe by the iron core first half all the way, then reach permanent magnet, is delivered to finally by permanent magnet
Surrounding air；Another way reaches yoke bottom by iron core lower half, then is delivered to surrounding air by yoke bottom.
Path 2:Heat reaches permanent magnetism by coil rack top by the air between permanent magnet and coil rack top
Iron, then surrounding air is delivered to by permanent magnet.
Path 3:Heat first passes through gasket, then by coil rack lower part, then by coil rack and yoke bottom it
Between air, reach yoke bottom, surrounding air be delivered to finally by yoke bottom.
Path 4:Heat first passes through coil outsourcing electrical adhesive tape, then by the sky between coil and yoke side and add-in card
Gas, finally passes by yoke side and add-in card.
When being powered due to electromagnet 3, the resistance in circuit can produce heat by electric current, its calculation formula is Q=I2R。
The heat that electromagnet 3 produces can be delivered on human skin in the form of heat transfer, thermal convection current, when temperature is at 35 DEG C or so, people
Body skin produces the sense of heat；When temperature is more than 45 DEG C, heat or even boiling hot sensation are produced；When temperature reaches 47 DEG C, there is scald to keenly feel；Temperature
Degree will scald to form blister when being more than 50 DEG C；If 60 DEG C contact human skin one minute, III degree of scald will result in.In profit
During aiding in pneumoperitoneum coelosis with electromagnet 3, when operation, need to be always maintained at 3 current turns ON of electromagnet, and the heat of continuation makes
Obtain temperature constantly to raise, scald even necrosis can be caused to the patient in operation.
A kind of method is found out, the heat that electromagnet 3 is transferred to human skin can be reduced, it is ensured that human skin will not be in hand
It is damaged during art as problem necessary to Magnetic force tracting is realized.If reducing the electric current in circuit, can directly drop
The heat that low electromagnet 3 produces, but reducing electric current can cause the magnetic force of coil generation inadequate, electromagnet 3 is not enough to traction people
Body abdominal wall is lifted, and does not reach the function that operation requires.If the internal resistance of coil can be reduced by reducing the number of turn of coil, hair is reduced
Heat, but number of turn reduction can reduce magnetic flux, so as to reduce magnetic force, can equally influence the reliability of surgical procedure.Electricity in experiment
The coil of magnet 3 must simultaneously have higher ampere-turn value, while have less thermal power again, but also need less matter
Amount is easy to surgical procedure.
According to " intermediary " principle, general solution is radiated using the method for fluid heat exchanger, i.e., actively dissipates
Hot method.The radiating mode that active heat removal uses is divided into wind-cooling heat dissipating, water-cooling, liquid-cooling heat radiation, heat-pipe radiator heat dissipation, half
Several, the bands by way of carrying out heat transfer and thermal convection current such as the heat dissipation of conductor refrigerating sheet, compressor auxiliary heat dissipation and liquid nitrogen heat dissipation
Walk the heat assembled on magnet.
In actual surgical procedure, there should not be the progress of the object interference operation unrelated with performing the operation.Wind-cooling heat dissipating is general
It is that auxiliary heat dissipation is carried out by external fan, the magnetic core in the motor of air-cooled radiator can be interfered when electromagnet 3 works,
It may cause fan fails or weaken magnetic.And water cooling liquid-cooling heat radiation uses a liquid to replace air, the movement by water is dissipating
Unnecessary heat is taken away between backing by thermal convection current, but due to needing to use some operating theater instruments in surgical procedure, is used
Liquid, which exchange heat, easily to be had leakage hidden danger and influences the progress of operation, so should not also use liquid cooling.Finally we carry
Go out by making a circle silica gel heat exchanger tube 11 in 3 surrounding of electromagnet of fever, clear water is passed in pipe, will by constantly circulating
Heat is taken away, and can reach preferable heat dissipation effect in theory.
A diameter of 58mm of electromagnet 3, is highly 33mm, and the internal diameter of silica gel heat exchanger tube 11 is 8mm, outside diameter 11mm.Silicon
The temperature of 11 outer wall of glue heat exchanger tube is two, the temperature of 11 inner wall of silica gel heat exchanger tube is twi, the temperature of water is tf, silica gel heat exchanger tube 11
Wall thickness be δ (unit mm), had by heat transfer principle：
Above-mentioned two formula is added, and can be obtained：
And the thermal convection current in pipe can regard fluid as and plunder flat late heat transfer situation outside, since sebific duct length is longer, fully sent out at it
Exhibition section can regard turbulent-flow conditions as, it is assumed that Bottomhole pressure speed is u=3m/s, l=0.72m, if initial 20 DEG C of water temperature, rubber tube inner wall
40 DEG C of temperature, physical parameter dynamic viscosity ν=0.805 × 10 of water when being averaged 30 DEG C, 30 DEG C-6m2/ s, Prandtl number Pr=
5.42, thermal conductivity factor λ=61.2 × 10-2W/ (mK), verifies Reynolds number：
Reynolds number is more than 5 × 105, meet turbulent flow condition condition.
According to Rex=5 × 105Laminar flow extent x can be tried to achievec：
Comprehensive laminar flow section (x<xc) and turbulent flow section (x>xc), there is aggregative formula：
It can be obtained after integration
Wherein RecFor critical Reynolds number, according to Rec=5 × 105, then above formula turn to：
Num=(0.037Re4/5-871)Pr1/3
Re is the Reynolds number of the length characterized by tablet total length l in formula.
Rel=2.683 × 106
Num=(0.037 × (2.683 × 106)4/5-871)(5.42)1/3=7501.624
Then the heat exchange amount of silica gel heat exchanger 11 is
Since the h of sebific duct is larger, it will be appreciated that it is preferable for the convection current heat transfer property inside silicone tube, it can be neglected when calculating thermal resistance
Its thermal convection current is omited, then formula is rewritten into：
When there is certain cylindrical side area, the lateral area that heat exchange area is cylinder can be roughly estimated, at this time unit
Heat exchange amount in time depends on the wall thickness with sebific duct, and the selection wall thickness that should try one's best in sebific duct type selecting is relatively thin, and in order to avoid meter
Error is calculated, the less sebific duct of diameter should be selected when selecting direct.
That finally we select is internal diameter 8mm, and the silicone tube of outside diameter 11mm, can then estimate theoretical heat exchange amount：
In general, electromagnet removes the acting of its mechanical energy, is converted into thermal energy in the power of full load in 100W or so
Thermal power should be substantially less than 100W, and in theory, such heat sink conception can solve electromagnet heating problem.In reality
In the operation of border, we also leave enough design margins, can reach preferable heat dissipation effect.
Referring to Fig. 3, soft magnetic material 2 includes the permanent magnet of annular, in the case where keeping magnetic field area constant, makes magnetic field
Power size variation very little, while heat exchange area is increased, improve radiating efficiency.Formed, carried out using rubidium iron boron principle sintering
After mechanical processing, then electroplated with white zine, surface spraying epoxy resin, then magnetized and be made, in the outside of permanent magnet by interior
To white zine electrodeposited coating and epoxy resin layer is sequentially formed outside, the characteristics of possessing magnetic strong, anticorrosive, perfect heat-dissipating.
Creating operative space is realized using the magnetic attraction lifting stomach wall between electromagnet 3 and soft magnetic material 2, dotted line
For stomach wall initial position, solid line is the stomach wall position after lifting.Operation consent, first by device installation on one's sick bed, can be according to not
With the requirement of type of surgery and different patients, the position of supporting rack is adjusted, is moved into the place for meeting that operation requires, then
Sliding block 12 is fixed by the 3rd trip bolt 13, and by adjusting cross bar 7 and three-way pipe 6 come preliminary regulating magnet 3 with suffering from
The position relationship of person, three-way pipe 6 is fixed using the first trip bolt 8；In surgical procedure, electromagnetism is given using electromagnetic control apparatus 1
Iron 3 is powered and places it in the designated position on the outside of abdominal cavity (depending on specific location is required according to operation), then soft by one piece
Magnetic material 2 is inserted in abdominal cavity of patients by operative incision, and the attraction using electromagnet 3 to soft magnetic material 2, is fixed
In internal abdominal wall with 3 corresponding position of electromagnet, electromagnetism can be changed by the voltage of electromagnetic control system regulating magnet 3
Magnetic attraction size between iron 3 and soft magnetic material 2, so as to provide stomach wall pulling force to create operative space；If by electromagnet 3
Voltage turn up full blast and be still unable to reach the required magnetic attraction size of operation, when operation, can insert polylith in same position
Soft magnetic material 2, allows polylith soft magnetic material 2 to magnetize by electromagnet 3 to overlap to strengthen magnetic field (referring to Fig. 1),
This makes it possible to produce the required sufficiently large magnetic attraction of operation；Meanwhile in surgical procedure, by adjusting cross bar 7 and threeway
Pipe 6 drives intraperitoneal soft magnetic material 2 to move to adjust external electrical magnet 3, adjusts in place afterwards respectively by the first trip bolt 8
Tightened with the second trip bolt 9, realize the purpose of lifting stomach wall (referring to Fig. 1), so as to create good space for operation and regard
It is wild；And after performing the operation, first electromagnet 3 can be powered off, at this time, intraperitoneal soft magnetic material 2 will due to losing magnetism
It is automatically separated, then operating theater instruments can be utilized to take out intraperitoneal soft magnetic material 2 from operative incision.
Due to that can produce substantial amounts of heat in 3 galvanization of electromagnet, and 3 heat dissipation effect of electromagnet is bad, can cause
The rising of 3 own temperature of electromagnet, to prevent the excessive scald patient skin of 3 temperature of electromagnet, is surround using silica gel heat exchanger tube 11
Electromagnet 3 simultaneously passes to recirculated water by cooling water pump 14 electromagnet 3 during use is cooled down, and in electromagnet 3
Working face cover one layer of heat insulating mattress 15.In real process, the quantity of device can be increased or decreased, with reach increase or
The quantity of electromagnet 3 is reduced, so as to adapt to demand of the different operations to magnetic attraction.
It can be seen that by unit heat flux distribution finite element analysis under the natural conditions of no heat sink conception, electromagnet
Generate heat more serious, for temperature substantially at 84.2 DEG C -84.5 DEG C, bulk temperature distribution uniform, the highest part of temperature is copper line
Circle.After sebific duct heat dissipation is added, side wall becomes heat transfer and forced convertion by free convection, its thermal conduction study condition can borrow
The result of theory analysis：
Num=(0.037 × (2.683 × 106)4/5-871)(5.42)1/3=7501.624
After adding heat sink conception as can be seen from the results, clearly, bulk temperature is cooled to cooling-down effect
20.3 DEG C -20.5 DEG C, it is not much different substantially with environment temperature.By finite element analysis, can confirm that it is following some：
1) thermal conductivity of electromagnet is preferable, and whether without heat sink conception or under conditions of having heat sink conception, electromagnet is whole
The temperature difference of body is little.
2) electromagnet fever phenomenon is more serious, and the steady temperature that generates heat after heat transfer steady-state analysis is carried out, under initial condition reaches
To more than 80 DEG C, if such temperature is used for practice situation and can cause serious injury.
3) effect of heat sink conception is preferable, and after adding silica gel heat exchanger tube 11 and being radiated, temperature is remarkably decreased, current
Most heat is taken away.
Barrier is heat-insulated be it is heat-insulated by being realized to the notable resistance of heat transfer, using low thermal conductivity composition or
The extremely low air of thermal conductivity factor is introduced in film can obtain good heat insulation.In the industry, the heat insulating mattress of application is put into
Piece 15 mainly has asbestos-packing gasket and silicic acid aluminium backing.Asbestos-packing gasket is auxiliary again as primary raw material using asbestos fibre, rubber
With rubber chemicals and filler material, it is made by processes such as mixing, hot-rolling shaping, vulcanizations.Asbestos-packing gasket is according to it
The difference of formula, processing performance and purposes, can be divided into common asbestos-packing gasket and oil resisting paronite pad, available for 450 DEG C
Following adiabatic environment.Alumina silicate high temperature insulating gasket 15 is manufactured high strength fibre paper according to customer demand, which has
There are excellent heat-proof quality and good workability.And have fabulous resist melt penetrating power, it is commonly used for instrument and equipment, electricity
The insulation of thermal element and heat-insulated, available for less than 1400 DEG C environment.To sum up, alumina silicate high temperature insulating gasket 15 is to meet the present invention
Insulation requirement.
Embodiment two
Referring to Fig. 4, the soft magnetic material 2 in the present embodiment has multiple, and each soft magnetic material 2 is by multiple magnetic cell cubes
201 compositions；Magnetic cell cube 201 is square, four 201 matrix pattern arrangement forms of magnetic cell cube, one square soft magnetism material
Material 2, the inside angle part of multiple magnetic cell cubes 201 is connected by connecting line.
Referring to Fig. 5, magnetic cell cube 201 is rectangle, and two magnetic cell cubes are superimposed about 201 and are rotatablely connected composition
One soft magnetic material 2.
Magnetic cell cube 201 in the present invention can also select round iron piece, and thickness is at least 5mm, the round iron of a diameter of 8mm
Piece is directly arranged in vivo, if the thickness of round iron piece is less than 5mm, then want to produce enough magnetic attraction just need to be put into compared with
More round iron pieces, is unfavorable for surgical procedure.Multi-disc can be carried out at the same time to arrange for a unit, selection is taken out and be magnetic using one
Head iron plate is suctioned out.
Soft magnetic material 2 in the present invention can also use foldable structure.Expanding area is larger, and arrangement is convenient.Specifically may be used
To select following scheme：
1st, circular soft magnetic material 2 selects circular soft magnetic material of the radius for 8mm by rotary folding into sector
2, rotary folding is carried out into sector, is 8mm into width.It is larger by manual arrangement, expanding area after.
2nd, the soft magnetic material 2 of rectangle becomes small rectangle by folding, and selects the rectangle of 16x16mm to be folded into 16x8mm
Rectangle, be 8mm into width, it is larger by manual arrangement, expanding area after.
3rd, circular soft magnetic material 2 becomes small semicircle by folding, and selects the circle of 16mm radiuses to be folded into half
Circle, is 8mm into width, larger by manual arrangement, expanding area after.
Embodiment three
Referring to Fig. 6~7, stainless steel casing 18 is equipped with the outside of electromagnet 3, silica gel heat exchanger tube 11 is around being located at outside stainless steel
The outside of shell 18.Using the preferable stainless steel casing 18 of thermal conductivity, the heat dissipation performance in each face beyond working face can be strengthened.For
Further raising heat dissipation performance, the outside of stainless steel casing 18 are equipped with spiral helicine radiating fin 19, silica gel heat exchanger tube 11
Around being located between radiating fin 19；Electromagnet 3 is further produced heat and outwards distributed by radiating fin 19, and increasing is changed with silica gel
The contact area of heat pipe 11, improves cooling effect.
The outside of stainless steel casing 18 is additionally provided with a plastic housing 20, the cylinder for upper and lower ends opening of plastic housing 20
Shape, radiating fin 19 and silica gel heat exchanger tube 11 are arranged between plastic housing 20 and stainless steel casing 18, and the inner side of plastic housing 20 is set
There is the clamping mechanism being connected with radiating fin 19.Clamping mechanism includes the multiple clamping muscle for being eccentrically set on the inner side of plastic housing 20
16, one end and the 20 inner wall integrally connected of plastic housing of muscle 16 are clamped, the other end tilts to radially inner side and is equipped with the clamping of axial direction
Protrusion 17, is correspondingly provided with clamping groove on radiating fin 19.Clamping muscle 16 elasticity of itself can make it that clamping protrusion 17 is automatic
It is caught in clamping groove, simple in structure, easy for installation, using muscle 16 is clamped, that silica gel heat exchanger tube 11 can be kept to be stably fixed at is scattered
It is easy for installation between hot fin 19, and plastic housing 20 can further provide magnetism isolating effect, prevent apparatus in surgical procedure
Attracted by electromagnet 3, ensure being normally carried out for operation.
Preferred embodiment of the invention described in detail above.It should be appreciated that those of ordinary skill in the art without
Need creative work to conceive according to the present invention and make many modifications and variations.Therefore, all technologies in the art
Personnel are available by logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Technical solution, all should be in the protection domain being defined in the patent claims.
Claims (10)
1. a kind of intraperitoneal controllable minimally invasive system of the adjustable strong electromagnetic with cooling device, it is characterized in that：The system is by electromagnetism
Control device, electromagnet, electromagnet cooling device, soft magnetic material and supporting rack composition；The soft magnetic material is used to insert
In abdominal cavity of patients, interact the magnetic attraction produced needed for lifting stomach wall with the electromagnet；Support frame as described above connects electromagnet,
There is provided and support and for lifting stomach wall for electromagnet；
Wherein：
The electromagnetic control apparatus includes power supply module, display module, voltage regulating module and temperature measurement module, and power supply module is electromagnet
Power supply, voltage regulating module adjust the voltage of power supply module, and temperature measurement module measures the temperature of electromagnet, and display module shows power supply module
Voltage；
The electromagnet cooling device is used to cool down the electromagnet during use, including magnetism servo-electric motor water-cooling and heat insulating mattress
Piece, magnetism servo-electric motor water-cooling is around the outside for being located at electromagnet and connects cooling water pump, and heat insulating mattress is arranged on the working face on the downside of electromagnet
On.
2. the intraperitoneal controllable minimally invasive system of the adjustable strong electromagnetic with cooling device as claimed in claim 1, it is characterized in that：Institute
The outside for stating soft magnetic material is equipped with white zine electrodeposited coating and epoxy resin layer successively from the inside to the outside.
3. the intraperitoneal controllable minimally invasive system of the adjustable strong electromagnetic with cooling device as claimed in claim 1, it is characterized in that：Institute
It is alumina silicate high temperature insulating gasket to state heat insulating mattress.
4. the intraperitoneal controllable minimally invasive system of the adjustable strong electromagnetic with cooling device as claimed in claim 1, it is characterized in that：Institute
Stating soft magnetic material has multiple, and each soft magnetic material is made of multiple magnetic cell cubes；
The magnetic cell cube is square, four magnetic cell cube matrix pattern one square soft magnetic materials of arrangement form, more
The inside angle part of a magnetic cell cube is connected by connecting line；
Or the magnetic cell cube is rectangle, two magnetic cell cubes are superimposed up and down and rotation connection forms a soft magnetism
Material.
5. the intraperitoneal controllable minimally invasive system of the adjustable strong electromagnetic with cooling device as claimed in claim 1, it is characterized in that：Institute
Stating soft magnetic material has multiple, and each soft magnetic material is foldable structure.
6. the intraperitoneal controllable minimally invasive system of the adjustable strong electromagnetic with cooling device as claimed in claim 1, it is characterized in that：Institute
Stating supporting rack includes two sliding blocks, two montants, a cross bar, two three-way pipes, two elongation bars and two universal joints, wherein
Fixed in two montant lower end insertion sliding blocks and by trip bolt；Cross bar is sleeved on two montants and passes through spiral shell up or down
Clench solid；String has two three-way pipes on cross bar, and three-way pipe is fixed by trip bolt；Three-way pipe passes through universal joint and elongation bar
One end connects, and the other end of elongation bar is connected with electromagnet.
7. the intraperitoneal controllable minimally invasive system of the adjustable strong electromagnetic with cooling device as claimed in claim 1, it is characterized in that：Institute
The outside for stating electromagnet is equipped with stainless steel casing, and magnetism servo-electric motor water-cooling is around the outside for being located at stainless steel casing.
8. the intraperitoneal controllable minimally invasive system of the adjustable strong electromagnetic with cooling device as claimed in claim 7, it is characterized in that：Institute
The outside for stating stainless steel casing is equipped with spiral helicine radiating fin, and magnetism servo-electric motor water-cooling is around the silica gel heat exchange being located between radiating fin
Pipe；
A plastic housing, the cylindrical shape for upper and lower ends opening of plastic housing, heat dissipation are additionally provided with the outside of the stainless steel casing
Fin and silica gel heat exchanger tube are arranged between plastic housing and stainless steel casing, and the inner side of plastic housing is equipped with what is be connected with radiating fin
Clamping mechanism.
9. the intraperitoneal controllable minimally invasive system of the adjustable strong electromagnetic with cooling device as claimed in claim 8, it is characterized in that：Institute
Stating clamping mechanism includes being eccentrically set on multiple clamping muscle on the inside of plastic housing, and the one end and plastic housing inner wall for being clamped muscle integrally connect
Connect, the other end tilts to radially inner side and is equipped with the clamping protrusion of axial direction, and clamping groove is correspondingly provided with radiating fin.
10. the intraperitoneal controllable minimally invasive system of the adjustable strong electromagnetic with cooling device as claimed in claim 8, it is characterized in that：
A diameter of 58mm of the electromagnet, is highly 33mm, and the internal diameter of silica gel heat exchanger tube is 8mm, outside diameter 11mm.
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| CN201711364408.7A CN107981898A (en) | 2017-12-18 | 2017-12-18 | The intraperitoneal controllable minimally invasive system of adjustable strong electromagnetic with cooling device |
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| CN109009476A (en) * | 2018-08-28 | 2018-12-18 | 郑州大学第附属医院 | A kind of operation on rectum auxiliary device |
| CN113171185A (en) * | 2021-04-26 | 2021-07-27 | 吉林大学 | Magnetic force guided minimally invasive detection tracking and position locking device for intestinal lesion markers |
| CN114041837A (en) * | 2021-11-12 | 2022-02-15 | 张进军 | Special opener equipment for thyroid |
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