What is the effect of minimally invasive and harmonious clips, endoscopic gastric and harmonious cli

At present, there are two types of hemostatic clips for minimally invasive use. One is a titanium clip, and this one is a metal clip that won't absorb, rightMRIYes, it has an impact. The other is a biological clip, which can be absorbed, ** a little more expensive, this has no effect on MRI.

Minimally invasive surgery. The application of instruments has changed the way traditional surgery is performed. It brings convenience to the surgeon and brings less surgical damage to the patient. Traditional surgery is an open surgery.

The image seen on the TV screen during minimally invasive surgery is several times clearer than the actual one, which greatly reduces the blindness of the operation, and sometimes the diagnosis and ** can be carried out at the same time.

Advantages of the procedure:

Minimally invasive surgery is undoubtedly a revolutionary step forward compared to traditional surgery. It is known as one of the development directions of surgery in the 21st century, and it is a cutting-edge technology that combines electronic display systems with high-tech surgical instruments and traditional surgical procedures. With the development and progress of science and technology, the concept of "minimally invasive" has penetrated into various fields of surgery.

Such as brain surgery, urology.

In orthopedics, there are many surgical methods, there are many surgical instruments, and the monitoring system is not limited to endoscopes.

For example, osteoarthroscopy, thoracoscopy, intervention**.

It is more interventional, such as spine surgery and orthopedics. There are other modalities like microsurgery which is widely used in hand surgery etc. Thyroid surgery is both cosmetic and minimally invasive.

When to take off the clip. Fall.

To put it simply, the gastroscope plus an ultrasound probe is inserted into the esophagus, which can not only see the surface of the esophagus, but also carry out a deeper ultrasound scan, and can also extract esophageal tissue for biopsy at the same time. A regular gastroscopy can only examine the surface of the esophagus.

The role of positioning is to ensure that the workpiece has a correct position in the fixture relative to the machine tool.

Clamping is to keep this correct position constant. So as to ensure the machining accuracy of the parts.

Positioning and clamping are two different things, positioning is not equal to clamping. Positioning is not necessarily clamped, clamping is not determined by positioning, positioning is divided into complete positioning, underpositioning, overpositioning three kinds, of which complete positioning is the best, underpositioning is allowed to exist in some cases. The over-positioning can not exist, and the usual method of eliminating over-positioning is with diamond pins, floating supports, and so on.

The direction of the clamping force should be the direction of the workpiece with good rigidity, and the direction of the clamping force should help to reduce the clamping force. The clamping force should be perpendicular to the positioning base.

The clamping force is also divided into three elements: the direction, the magnitude, and the application point of the force.

Positioning is to allow the workpiece to occupy the correct position in the fixture, and clamping is to keep the workpiece in the correct position.

Is there such a statement? Positioning is positioning, clamping is clamping, the two are different, clamping sometimes has the effect of positioning, but positioning is not necessarily clamping!

The role of clamping when the workpiece is positioned in the fixture is that the original position cannot be changed. That's for the preparation of machining, and if machining is not required, then there is no need to clamp. Just positioning!

Insulated puncture clamp product introduction (Yueqing Yidi Electric****).

Insulation piercing connectors are mainly composed of insulating shells, piercing blades, waterproof rubber pads, and torque bolts. When the cable branch is connected, the branch cable is inserted into the branch cap and the position of the main line branch is determined, and the torque nut on the wire clamp is tightened with a socket wrench, and with the tightening of the torque nut, the two insulators hidden in the piercing blade are gradually closed, and at the same time, the arc sealant pad wrapped around the piercing blade gradually closes to the cable insulation, and the piercing blade also begins to pierce the cable insulation and metal conductor. When the sealing degree of the sealant gasket and insulating grease and the contact between the piercing blade and the metal body reach the best effect, the torque nut will automatically fall off, at this time, the installation is completed and the contact point sealing and electrical effect are optimal.

Product Overview: Piercing structure, simple installation, no need to strip the insulated wire;

Torque nut, constant puncture pressure to ensure a good electrical connection without damaging the wire, self-sealing structure, moisture-proof, waterproof, anti-corrosion, prolonging the service life of insulated wires and wire clamps.

Special contact blades are used for copper (aluminum) butting and copper-aluminum transitions.

The electrical contact resistance is small, and the contact resistance is less than the times of the resistance of the equal length branch wire, which conforms to the DL standard.

Special insulating shell, anti-light and environmental aging, dielectric strength of 12kV

Curved design, suitable for the same (different) diameter wire connection, wide connection range (

Performance test. Mechanical properties: the clamp grip force is greater than 1 10 wire pulling force, in line with the requirements of GB2314-1997.

Temperature rise performance: In the case of high current, the temperature rise of the wire clamp connects the temperature rise of the wire.

Thermal cycling performance: in line with GB T2317-2000 thermal cycling test standard for power fittings.

Corrosion resistance: 3 times 14-day cycle test in sulfur dioxide and salt spray environment.

Environmental Aging Properties: Exposure to ultraviolet rays, dry and humid environments, temperature changes and thermal shock for six weeks.

Fire performance: The insulating material of the connecting device is subjected to the cortender wire test and meets the requirements of GB Chapters 4-10.

Product Advantages: 1. Easy installation: no need to strip off the insulating skin of the cable to make cable branches, and the joints are completely insulated. There is no need to cut the main cable, and the cable can be branched at any position. The installation is simple and reliable, only a socket wrench is used, and it can be installed with electricity.

2. Safe to use: the joint is torsion-resistant, shock-proof, waterproof, flame-retardant, anti-electrochemical corrosion and aging, and does not require maintenance. It has been successfully used for more than 30 years.

3. Cost saving: the installation space is very small, saving bridge and civil engineering costs.

The insulation piercing clamp is used when the cable is connected, and the specific applications are as follows:

Overhead low-voltage insulated cable connection.

Low-voltage insulated inlet cable T-connection.

The building power distribution system is connected or connected.

Underground low-voltage cable connection.

Street lamp distribution system connection· Ordinary cable field branching.

In China, the traditional methods mainly include: bus duct, distribution box, pre-branch cable, groove and wedge clamp, etc., while the insulation piercing clamp is a new cable branch method after the pre-branch cable, which has been widely used in developed countries such as Europe and the United States, and has been running safely and stably on the lines for more than 30 years.

1. Low-voltage (1kv) ordinary insulated puncture wire clamp.

It is used for overhead lines and low-voltage incoming cable branches. Applicable cable: copper or aluminum double-plastic cable (copper-aluminum transition can be made).

2. Low-voltage (1kV) double-plastic insulated puncture clamp.

It is used for overhead lines and low-voltage incoming cable branches. Applicable cable: copper or aluminum double-plastic cable (copper-aluminum transition can be made).

3. Low-voltage (1kV) fireproof insulated puncture clamp.

It is used for building power distribution, tunnel lighting and other engineering cable branches with fire protection requirements. Applicable cables: flame retardant or fire-resistant cables (copper and aluminum transitions are possible).

4. Street lamps and tunnel insulation puncture clamps.

It is used for street lights, tunnel power distribution system cable branches. Applicable cable: copper or aluminum insulated wire (copper-aluminum transition is possible).

5. Medium voltage (10kv) insulation puncture wire clamp.

For branches of 10kV overhead insulated cables. Applicable cable: copper or aluminum insulated wire (copper-aluminum transition is possible).

6. Overhead cable piercing line clamp grounding ring.

It is used for medium and low voltage overhead cable grounding discharge or electrical inspection.

When used in overhead cables, compared with traditional groove clamps or wedge clamps, it has:

It does not destroy the insulation layer of the wire, waterproof, anti-oxidation and maintenance-free, and truly achieves the insulation of the line.

It is used to clamp the workpiece.

The fixture is a process device used to quickly fasten the workpiece during processing and keep the machine tool, tool, and workpiece in the correct relative position. That is to say, workholding fixture is an indispensable component of machining, driven by the development of machine tool technology to high-speed, high-efficiency, precision, compound, intelligent and environmental protection, fixture technology is developing in the direction of high precision, high efficiency, module, combination, general and economic.

Fixtures are also known as fixtures. Broadly speaking, any process in the process can be called a fixture for the device used to install the workpiece quickly, conveniently and safely. For example, welding fixtures, inspection fixtures, assembly fixtures, machine tool fixtures, etc.

Among them, machine tool fixtures are the most common, often referred to as fixtures for short.

The basic principles of tooling and fixture design

1. Meet the stability and reliability of workpiece positioning in the process of use.

2. There is enough bearing or clamping strength to ensure the processing process of the workpiece on the tooling fixture.

3. Simple and fast operation in the process of clamping.

4. The wearing parts must be a structure that can be quickly replaced, and it is best not to use other tools when the conditions are sufficient.

5. Meet the reliability of repeated positioning of the fixture in the process of adjustment or replacement.

6. Avoid complex structure and expensive cost as much as possible.

7. Use standard parts as the constituent parts as much as possible.

8. Form the systematization and standardization of the company's internal products.

Basic knowledge of tooling and fixture design

A good machine tool fixture must meet the following basic requirements:

1. The key to ensuring the machining accuracy of the workpiece to ensure the machining accuracy is to correctly select the positioning datum, positioning method and positioning element, and if necessary, it is necessary to carry out positioning error analysis, and also pay attention to the influence of the structure of other parts in the fixture on the machining accuracy, so as to ensure that the fixture can meet the machining accuracy requirements of the workpiece.

2. The complexity of the special fixture to improve production efficiency should be adapted to the production capacity, and a variety of fast and efficient clamping mechanisms should be used as much as possible to ensure convenient operation, shorten the auxiliary time and improve production efficiency.

3. The structure of the special fixture with good process performance should be simple and reasonable, which is convenient for manufacturing, assembly, adjustment, inspection and maintenance.

4. The tooling fixture should have sufficient strength and rigidity, and the operation should be simple, labor-saving, safe and reliable. Under the premise that the objective conditions are allowed and economical and applicable, pneumatic, hydraulic and other mechanized clamping devices should be used as much as possible to reduce the labor intensity of the operator. The fixture should also be easy to evacuate chips.

If necessary, the chip removal structure can be set to prevent the chips from destroying the positioning of the workpiece and damaging the tool, and to prevent the accumulation of chips from bringing a large amount of heat and causing deformation of the process system.

5. The special fixture with good economy should adopt standard components and standard structure as much as possible, and strive to have a simple structure and easy manufacturing, so as to reduce the manufacturing cost of the fixture. Therefore, the necessary technical and economic analysis of the fixture scheme should be carried out according to the order and production capacity during the design, so as to improve the economic benefits of the fixture in production.

In order to ensure product quality and productivity in the production process, tooling and fixtures are adopted, and its main functions include the following aspects:

1. Ensure and improve product quality (workpieces can better enter the accurate position).

2. Improve labor efficiency (reduce the time for manual workpiece).

3. Expand the operation range of the tool (the position is fixed, and the personnel are easy to operate) 4. Improve labor conditions and reduce product costs.

Handmade, give more points!

In order to improve production efficiency and product quality in production, Boyote often uses tooling fixtures in the middle and rear sections of production to carry out functional tests or auxiliary assembly. The function of tooling and fixtures is to improve production efficiency and reduce labor costs at the same time.

1.Positioning. Fitting the part in the correct "exact" position on the machine is defined as the degree of freedom.

2.Clamping. Resistance to cutting forces.

3.Guide the tool. For example, the drill die sleeve of the drilling fixture.

Its function is to clamp machined parts.

It depends on what machine tool. Lathe? Machining centers? Or something else.

What it does is make the files available to all computers on the local area network.

All the resources in the folder, for example, you can modify and delete a word document named "A", put it in a shared folder, talk to other computers with online neighbors, or access your computer through an IP address. To put it simply, it is to realize the function of resource sharing within the local area network!

Anyone who uses this computer can enjoy this folder.