CN105963013A - Low temperature endoscope blood vessel collecting device and method - Google Patents

Abstract

A low-temperature endoscope blood vessel collection device and method belong to the field of medical technology. The structure of the hard tube endoscope is: the hard tube endoscope is made of steel pipe, the tip of the steel tube is the lens for image collection, and the end is threaded for connecting and fixing the collection sleeve and the free sleeve tube; The light guide connector connected with the optical fiber and the connection device connected with the video camera; the structure of the short trocar is: the outer periphery of the shell is connected with the annular airbag, the annular airbag is wrapped with rubber, and the main shell is connected with the inflation port of the annular airbag and carbon dioxide The top of the main housing is connected to the main body seal, and the carbon dioxide pipe port is connected to the CO inlet. The invention has the advantages of improving the integrity rate of the graft vessel, avoiding hidden damage of the graft vessel, improving the success rate of the bypass operation, reducing the probability of re-blocking the graft vessel, and prolonging the survival time of patients.

Description

A low-temperature endoscope blood vessel collection device and method

technical field

The invention relates to a low-temperature endoscope blood vessel collection device and method, belonging to the field of medical technology.

Background technique

In bypass surgery, a graft vessel must be harvested from the patient, now usually the great saphenous vein or the radial artery. In traditional surgery, the skin and muscle tissue should be completely peeled off, and the target blood vessel and collateral blood vessels should be separated under direct vision. The operation generally requires an incision in the patient's leg or arm that is equivalent to the length of the target blood vessel, usually 20-25cm. The patient suffers a lot, the postoperative recovery time is long, the chance of infection is high, the pain is intense and lasts for a long time, and the scar is obvious.

Now the minimally invasive endoscopic blood vessel harvesting system can help doctors perform minimally invasive surgery on the legs or arms. The doctor only needs to make one or two small incisions of 1-2cm on the patient's legs or forearms, and the Remove the desired blood vessel. This method has very little trauma to the patient, reduces the chance of infection and complications, reduces pain, shortens postoperative recovery time, and is more aesthetically pleasing.

Since the advent of the endoscopic blood vessel harvesting system in 1997, more than 1 million patients around the world have received surgery with this technology, and there are tens of thousands of cases in China. After 5 years of clinical follow-up, its long-term patency rate is comparable to that of traditional stripping surgery. no difference. The International Society for Minimally Invasive Cardiothoracic Surgery recommends endoscopic vessel harvesting as the standard procedure for heart bypass surgery. The annual usage rate in the United States is more than 70%, but it is less than 5% in China. At present, the competition in this field is weak, and only the products of imported companies and our company are sold in the market.

Contents of the invention

In order to overcome the deficiencies in the prior art, the present invention provides a low-temperature endoscopic blood vessel collection device and method.

In order to achieve the above object, the technical solution adopted in the present invention is:

A low-temperature endoscopic blood vessel collection device is composed of a rigid tube endoscope, a short-mouth trocar, a free cannula, a collection cannula, bipolar scissors, and low-temperature electrocoagulation scissors:

The structure of the hard tube endoscope is: the hard tube endoscope is made of steel pipe, the tip of the steel tube is the lens for image collection, and the end is threaded for connecting and fixing the collection sleeve and the free sleeve tube; A light guide connector connected to an optical fiber and a connection device connected to a video camera;

The structure of the short-mouth trocar is: the outer periphery of the shell is connected to the annular air bag, and the annular air bag is covered with rubber. The main shell is connected to the air bag inflation port and the carbon dioxide tube port. air intake;

The structure of the free sleeve is: the free sleeve is composed of a steel pipe and a conical head, the steel pipe is covered with a PVC protective layer, one end of the steel pipe is fixed on the handle through the free sleeve, and the other end of the steel pipe is connected to the conical head;

The structure of the collection sleeve is: one end of the sleeve is connected with the connection mechanism, the connection mechanism is fixed on the handle, and the handle is connected to the sliding button; the nut locks the endoscope on the handle; the inner cavity of the sleeve has scissors holes arranged in parallel Connected with endoscope through hole, capillary through hole, support wire through hole and carbon dioxide gas inlet hole; endoscope through hole is inserted with endoscope, capillary through hole is inserted with capillary, and the front end of capillary is connected to lens cleaning on C-shaped ring The end is connected to the cleaning liquid injection port; the carbon dioxide air inlet is inserted with an air intake pipe, and the end of the air intake pipe is connected to the carbon dioxide gas injection port; the C-shaped ring connecting rod is inserted into the through hole of the supporting steel wire, and the front end of the C-shaped ring connecting rod is provided with a C-shaped ring ;The casing is fixed on the handle through the connecting mechanism, and the sliding button and the lens frame are installed on the handle; the nut locks the endoscope;

The structure of the bipolar scissors is: the rivet fixes the upper crescent-shaped scissors and the lower crescent-shaped scissors on the electrode hub. The material of the electrode hub is ceramic, and the heat-shrinkable insulating tube is covered; The electrode wire is wrapped with an insulating sleeve; the plum blossom wheel fixes the two electrode wires and the scissors handle together by injection molding; one end of the electrode wire extension line is connected to the plug, and the other end is connected to the electrode wire through the wire hole on the scissors handle;

The structure of low-temperature electrocoagulation scissors is: rivets fix the upper crescent-shaped scissors and the lower crescent-shaped scissors on the electrode hub, the material of the electrode hub is ceramic, the upper crescent-shaped scissors, the lower crescent-shaped scissors are covered with insulating silicone set; the upper crescent-shaped scissors and the lower crescent-shaped scissors are only used to clamp blood vessels, and will not cut blood vessels; the electrocoagulation sheet is fixed on the upper and lower crescent-shaped scissors, and connects the electrode wires Connection; the transmission steel wire is wrapped with an insulating sleeve, one end is connected to the connecting piece, and the other end is bound to the handle of the scissors through foam hard cotton; the pusher drives the transmission steel wire through a fixed clip; One end is connected to the electrocoagulation switch; the electrocoagulation switch is connected to the plug through the extension wire of the electrode wire; the large spring keeps the push handle in the forward position; the operator manually pulls the push handle back to clamp the scissor blades; and then pulls the push handle back to trigger The electrocoagulation switch enables the electrocoagulation sheet to be energized to ligate and separate blood vessels.

The effective length of the rigid tube endoscope is 20-45cm, the diameter is 3-8mm, the optical working distance is 20mm, the effective depth of field is 3-100mm, the viewing angle is 0°, and the field angle is 75°.

The length of the annular air bag of the short-mouth trocar is 1-3cm, and the diameter after inflation is 2-5cm; the main body seal has two sizes, one with a diameter of 6-15mm for matching with the collection cannula; the other with a diameter of 3 -10mm is used to cooperate with the free sleeve 20.

The effective length of the free casing is 25-40cm; the outer diameter of the free casing is 5-15mm; the outer diameter of the tapered head is 9-18mm.

The effective length of the collection sleeve is 20-45cm, and the outer diameter is 9-20mm; the outer surface of the sleeve is a prismatic surface; the diameters of the scissors through hole and the endoscope through hole are respectively 4-9mm; the length of the handle is 8-15cm, The diameter is 2-5cm; the handle is at an angle of 15-30 degrees to the collection cannula.

Bipolar scissors have the function of electrocoagulation and cutting blood vessels. The effective length should be 40-70cm, and the opening should be 4-8mm. The blood vessels are cut by two scissor blades, and the scissor head can be rotated 360 degrees by the plum blossom wheel.

Low-temperature electrocoagulation scissors have the function of electrocoagulation and shearing, and the electrocoagulation and shearing of blood vessels can be completed in one step. The scissors can be used in conjunction with the existing electrocoagulation generator; when the output power is less than 30W, blood vessels can be coagulated; effective The length is 40-70cm; the opening of the scissors is 4-8mm.

A low temperature endoscopic blood vessel collection method, comprising the following steps;

Low-temperature electrocoagulation scissors collection step and bipolar scissors two collection steps,

Bipolar scissors collection steps: firstly ligate the blood vessel by the high temperature generated by the electric current, and then cut the blood vessel by two scissor blades;

Collection steps of low-temperature electrocoagulation scissors: The scissor blades of low-temperature electrocoagulation scissors cannot cut blood vessels directly. When in use, the scissors clamp the blood vessels and ligate the blood vessels through electric current at a relatively low temperature. After the ligation is completed, the blood vessels are automatically clamped off.

Low-temperature coagulation scissors have the advantage of protecting the target vessel and surrounding tissue from high temperature, but their cutting time is longer than that of bipolar scissors.

The advantages of the present invention are:

The low-temperature endoscopic blood vessel collection system of the present invention can help doctors perform minimally invasive blood vessel collection operations on legs or arms. The incision is a small incision of 1-2 cm, which will greatly reduce the chance of infection, reduce pain, and shorten postoperative recovery time. Also more beautiful.

The short-mouthed trocar in the system components is used to protect the incision. The short-mouthed trocar can be effectively fixed at the incision through the built-in annular air bag, so as to prevent the movement of the collection cannula or free cannula from causing damage to the wound or causing damage to the wound. Infect. In addition to separating the saphenous vein from surrounding tissues, the free cannula can also be used to harvest the saphenous vein and radial artery from the lower leg. This greatly broadens the scope of application of the present invention.

In addition, the low-temperature endoscopic blood vessel collection system of the present invention includes ordinary electrocoagulation scissors (also known as bipolar scissors) and low-temperature electrocoagulation scissors, and doctors can choose according to personal experience and patient conditions. This not only ensures the smooth implementation of endoscopic blood vessel collection by the doctor, but also protects the target blood vessel from the influence of high temperature.

In addition to separating the saphenous vein from surrounding tissues, the free cannula can also be used to harvest the saphenous vein and radial artery from the lower leg. This greatly broadens the scope of application of the present invention.

Description of drawings

A more complete and better understanding of the invention, and many of its attendant advantages, will readily be learned by reference to the following detailed description when considered in conjunction with the accompanying drawings, but the accompanying drawings illustrated herein are intended to provide a further understanding of the invention and constitute A part of the present invention, the exemplary embodiment of the present invention and its description are used to explain the present invention, and do not constitute an improper limitation of the present invention, as shown in the figure:

Fig. 1 is a schematic structural view of the whole endoscopic blood vessel collection system of the present invention;

Fig. 2 is a schematic structural view of the rigid tube endoscope of the present invention;

Fig. 3 is the structural representation of the short mouth trocar of the present invention;

Fig. 4 is the structural representation of free casing of the present invention;

Fig. 5 is a schematic structural view of the collection sleeve of the present invention;

Fig. 6 is the A-A sectional view of Fig. 5;

Fig. 7 is the right view of Fig. 5;

Fig. 8 is the structural representation of bipolar scissors of the present invention;

Fig. 9 is a schematic structural view of the low-temperature electrocoagulation scissors of the present invention;

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

detailed description

Obviously, many modifications and changes made by those skilled in the art based on the gist of the present invention belong to the protection scope of the present invention.

Those skilled in the art will understand that the singular forms "a", "an", "said" and "the" used herein may also include plural forms unless otherwise stated. It should be further understood that the word "comprising" used in the description of the present invention refers to the presence of said features, integers, steps, operations, elements and/or components, but does not exclude the presence or addition of one or more other features, Integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Additionally, "connected" or "coupled" as used herein may include wirelessly connected or coupled. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Those skilled in the art can understand that, unless otherwise defined, all terms including technical terms and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It should also be understood that terms such as those defined in commonly used dictionaries should be understood to have a meaning consistent with the meaning in the context of the prior art, and will not be interpreted in an idealized or overly formal sense unless defined as herein Explanation.

In order to facilitate the understanding of the embodiments of the present invention, several specific embodiments will be taken as examples for further explanation below in conjunction with the accompanying drawings, and each embodiment does not constitute a limitation to the embodiments of the present invention.

Embodiment 1: A low-temperature endoscopic blood vessel collection device is composed of a rigid tube endoscope 2, a short-mouth trocar 11, a free sleeve, a collection sleeve, bipolar scissors, and low-temperature electrocoagulation scissors;

As shown in Figure 1, the connection port trocar 11 of the collection sleeve 1, one end of the sleeve sleeve 1 is connected with the connection mechanism 14, the connection mechanism 14 is fixed on the handle 12, and the handle 12 is connected with the sliding button 13; The endoscope 2 is locked on the handle 12, and the bipolar scissors are inserted into the through holes 10 of the scissors.

In the schematic structural view of the rigid tube endoscope 2 shown in Figure 2: the rigid tube endoscope 2 is made of a steel pipe 50, the tip of the steel tube 50 is a lens for collecting images, and the end has a screw thread 51 for connecting with the collection sleeve and the free sleeve The tubes are connected and fixed. The endoscope is provided with a light guide connector 52 connected with an optical fiber and a connection device 53 connected with a video camera.

In the schematic structural view of the short-mouth trocar 11 shown in FIG. 3 : the outer periphery of the casing 47 is connected to the annular airbag 48, the annular airbag 48 is covered with rubber 42, and the main casing 47 is connected to the annular airbag inflation port 43 and the carbon dioxide tube port 44. The top of the main housing 47 is connected to the main body seal 46, and the carbon dioxide pipe port 44 is connected to the CO2 inlet 45;

In the structural diagram of the free casing shown in Figure 4: the free casing is made up of a steel pipe 20 and a conical head 21, the steel pipe 20 is covered with a PVC protective layer 22, and one end of the steel pipe 20 is fixed on the handle 4 through the free casing 20, The other end of the steel pipe 20 is connected with a conical head 21 .

In the structural diagrams of the collection sleeve shown in Figures 5, 6 and 7: one end of the sleeve 1 is connected to the connection mechanism 14, the connection mechanism 14 is fixed on the handle 12, and the handle 12 is connected to the sliding button 13; the nut 16 will The endoscope 2 is locked on the handle 12 . The inner cavity of the casing 1 has scissors through holes 10 , endoscope through holes 3 , capillary through holes 15 , supporting steel wire through holes 17 and carbon dioxide gas inlet holes 18 arranged in parallel. The endoscope through hole 3 is inserted with an endoscope 2, the capillary through hole 15 is inserted with a capillary 6, the front end of the capillary 6 is connected to the lens cleaner on the C-shaped ring 5, and the end is connected to the cleaning fluid injection port 7; the carbon dioxide gas inlet 18 An air intake pipe 8 is inserted, and the end of the air intake pipe 8 is connected to the carbon dioxide gas injection port 9; the C-shaped ring connecting rod 19 is inserted into the supporting steel wire through hole 17, and the front end of the C-shaped ring connecting rod 19 is provided with a C-shaped ring 5; The mechanism 14 is fixed on the handle 12, and the slide button 13 and the lens frame 4 are installed on the handle 12; the nut 16 locks the endoscope 2.

In the structural diagram of the bipolar scissors shown in FIG. 8 , the rivet 25 fixes the upper and lower crescent-shaped scissors 26 on the electrode hub 24 , and the material of the electrode hub 24 is ceramic, and the heat-shrinkable insulating tube is covered. The connecting piece 39 is connected to the electrode wire 38 through the electrode hub 24, and the electrode wire 38 is wrapped with an insulating sleeve 28; the plum blossom wheel 41 fixes the two electrode wires 38 and the scissors handle 32 through injection molding; one end of the electrode wire extension line 35 The plug 36 is connected, and the other end is connected to the electrode wire 38 through the wire hole 40 on the scissors handle 32 .

In the schematic structural view of low-temperature electrocoagulation scissors shown in Figure 9: rivets 25 fix the upper and lower crescent-shaped scissors 26 on the electrode hub 24, the material of the electrode hub 24 is ceramics, and the scissors are covered with an insulating silicone sleeve 23. The two scissor blades are only used to clamp blood vessels, not to cut blood vessels. The electrocoagulation sheet 27 is fixed on the upper and lower crescent-shaped scissors 26 and connected with the electrode lead 38 through the connecting sheet 39 . The transmission steel wire 30 is wrapped with the insulating sleeve 28, and one end is connected with the connecting piece 39, and the other end is bound on the scissors handle 32 by the foam hard cotton 29. The push handle 31 drives the transmission steel wire 30 through the fixed card 34 . One end of the electrode wire 38 in the insulating sleeve 28 is connected to the electrocoagulation sheet 27 , and the other end is connected to the electrocoagulation switch 37 . The electrocoagulation switch 37 is connected to the plug 36 through the extension wire 35 of the electrode lead. The large spring 33 maintains the push handle 31 in the forward position. The operator manually pulls the push handle back to clamp the upper and lower crescent-shaped scissors 26; pulling the push handle back will trigger the electrocoagulation switch 37, so that the electrocoagulation sheet 27 is energized to ligate and separate blood vessels.

Embodiment 2: The rigid tube endoscope has an effective length of 20-45 cm, a diameter of 3-8 mm, an optical working distance of 20 mm, an effective depth of field of 3-100 mm, a viewing angle of 0° and a field of view of 75°.

The length of the annular air bag of the short-mouth trocar is 1-3cm, and the diameter after inflation is 2-5cm; the main body seal has two sizes, one with a diameter of 6-15mm for matching with the collection cannula; the other with a diameter of 3 -10mm is used to cooperate with the free sleeve 20.

The effective length of the free casing is 25-40cm; the outer diameter of the free casing is 5-15mm; the outer diameter of the tapered head is 9-18mm.

The effective length of the collection sleeve is 20-45cm, and the outer diameter is 9-20mm; the outer surface of the sleeve is a prismatic surface; the diameters of the scissors through hole and the endoscope through hole are respectively 4-9mm; the length of the handle is 8-15cm, The diameter is 2-5cm; the handle is at an angle of 15-30 degrees to the collection cannula.

The effective length of bipolar scissors should be 40-70cm, and the opening should be 4-8mm; the scissors head rotates 360 degrees through the plum blossom wheel.

The effective length of the cryocoagulation scissors is 40-70cm; the opening of the scissors is 4-8mm.

Embodiment 3: A method for collecting blood vessels through a low-temperature endoscope, comprising the following steps;

First insert the endoscope 2 into the free sleeve 20, and install the free head 21;

Put the short-mouthed trocar 11 on the cannula 20, insert the free head 21 into the surgical site through the short-mouthed trocar 11, and push it toward the target;

After the free head 21 reaches the operation position, take out the free sleeve 20, and pull out the endoscope 2 therefrom;

Insert the endoscope 2 into the endoscope through hole 3 of the collection cannula, and insert low-temperature electrocoagulation scissors or bipolar scissors into the scissors through hole 10. Insert the collection cannula through the short-mouth trocar 11 into the surgical site;

Under the monitoring of the endoscope 2, push the c-ring 5 to the target blood vessel. If the lens is blurred by blood or fat, connect the cleaning solution injection port 7 to a 5cc normal saline syringe, and push the syringe to flush from the lens of the c-ring 5 Spray saline in the hole to clean the lens;

Advance low-temperature electrocoagulation scissors or bipolar scissors to the target site, coagulate and cut blood vessel branches;

After the procedure, remove the collection cannula and scissors.

As mentioned above, although the Example of this invention was demonstrated in detail, it is obvious to those skilled in the art that many modifications can be made as long as the inventive point and effect of this invention are not substantially deviated. Therefore, all such modified examples are also included in the protection scope of the present invention.

Claims (9)

1. A low-temperature endoscope blood vessel acquisition device is characterized in that it is made up of rigid tube endoscope, short mouth trocar, free sleeve, collection sleeve, bipolar scissors, and low-temperature electric coagulation scissors: The structure of the hard tube endoscope is: the hard tube endoscope is made of steel pipe, the tip of the steel tube is the lens for image collection, and the end is threaded for connecting and fixing the collection sleeve and the free sleeve tube; A light guide connector connected to an optical fiber and a connection device connected to a video camera; The structure of the short-mouth trocar is: the outer periphery of the shell is connected to the annular air bag, and the annular air bag is covered with rubber. The main shell is connected to the air bag inflation port and the carbon dioxide tube port. air intake; The structure of the free sleeve is: the free sleeve is composed of a steel pipe and a conical head, the steel pipe is covered with a PVC protective layer, one end of the steel pipe is fixed on the handle through the free sleeve, and the other end of the steel pipe is connected to the conical head; The structure of the collection sleeve is: one end of the sleeve is connected with the connection mechanism, the connection mechanism is fixed on the handle, and the handle is connected to the sliding button; the nut locks the endoscope on the handle; the inner cavity of the sleeve has scissors holes arranged in parallel Connected with endoscope through hole, capillary through hole, support wire through hole and carbon dioxide gas inlet hole; endoscope through hole is inserted with endoscope, capillary through hole is inserted with capillary, and the front end of capillary is connected to lens cleaning on C-shaped ring The end is connected to the cleaning liquid injection port; the carbon dioxide air inlet is inserted with an air intake pipe, and the end of the air intake pipe is connected to the carbon dioxide gas injection port; the C-shaped ring connecting rod is inserted into the through hole of the supporting steel wire, and the front end of the C-shaped ring connecting rod is provided with a C-shaped ring ;The casing is fixed on the handle through the connecting mechanism, and the sliding button and the lens frame are installed on the handle; the nut locks the endoscope; The structure of the bipolar scissors is: the rivet fixes the upper crescent-shaped scissors and the lower crescent-shaped scissors on the electrode hub. The material of the electrode hub is ceramic, and the heat-shrinkable insulating tube is covered; The electrode wire is wrapped with an insulating sleeve; the plum blossom wheel fixes the two electrode wires and the scissors handle together by injection molding; one end of the electrode wire extension line is connected to the plug, and the other end is connected to the electrode wire through the wire hole on the scissors handle; The structure of low-temperature electrocoagulation scissors is: rivets fix the upper crescent-shaped scissors and the lower crescent-shaped scissors on the electrode hub, the material of the electrode hub is ceramic, the upper crescent-shaped scissors, the lower crescent-shaped scissors are covered with insulating silicone set; the upper crescent-shaped scissors and the lower crescent-shaped scissors are only used to clamp blood vessels, and will not cut blood vessels; the electrocoagulation sheet is fixed on the upper and lower crescent-shaped scissors, and connects the electrode wires Connection; the transmission steel wire is wrapped with an insulating sleeve, one end is connected to the connecting piece, and the other end is bound to the handle of the scissors through foam hard cotton; the pusher drives the transmission steel wire through a fixed clip; One end is connected to the electrocoagulation switch; the electrocoagulation switch is connected to the plug through the extension wire of the electrode wire; the large spring keeps the push handle in the forward position; the operator manually pulls the push handle back to clamp the scissor blades; and then pulls the push handle back to trigger The electrocoagulation switch enables the electrocoagulation sheet to be energized to ligate and separate blood vessels. 2. A kind of low-temperature endoscope blood vessel acquisition device according to claim 1, characterized in that the effective length of the hard tube endoscope is 20-45cm, the diameter is 3-8mm, the optical working distance is 20mm, and the effective depth of field range is 3-45cm. 100mm, viewing angle of 0° and field of view of 75°. 3. A low-temperature endoscopic blood vessel collection device according to claim 1, characterized in that the length of the annular air bag of the short-mouth trocar is 1-3cm, and the diameter after inflation is 2-5cm; the main body seal has two sizes , one with a diameter of 6-15 mm is used to cooperate with the collection sleeve; the other with a diameter of 3-10 mm is used to cooperate with the free sleeve 20 . 4. A kind of low-temperature endoscopic blood vessel acquisition device according to claim 1, characterized in that the effective length of the free sleeve is: 25-40cm; the outer diameter of the free sleeve is 5-15mm; the outer diameter of the tapered head is 9-18mm. 5. A kind of low-temperature endoscopic blood vessel collection device according to claim 1, characterized in that the effective length of the collection sleeve is 20-45cm, the outer diameter is 9-20mm; the outer surface of the sleeve pipe is a prismatic surface; The diameters of the hole and the through hole of the endoscope are respectively 4-9 mm; the length of the handle is 8-15 cm, and the diameter is 2-5 cm; the handle and the collection sleeve form an angle of 15-30 degrees. 6. A kind of low-temperature endoscopic blood vessel collection device according to claim 1, characterized in that the bipolar scissors have the functions of electrocoagulation and cutting blood vessels, and its effective length should be 40-70cm, with an opening of 4-8mm; When the polar scissors are connected to a surgical power generator with an output power of 30-50w, they can effectively coagulate the blood vessels, and cut the blood vessels through two scissor blades. The scissors head can rotate 360 degrees through the plum blossom wheel. 7. A low-temperature endoscopic blood vessel acquisition device according to claim 1, characterized in that the low-temperature electrocoagulation scissors have an electrocoagulation function and a shearing function, and the electrocoagulation and shearing of blood vessels can be completed in one step, and the scissors can be combined with The existing electric coagulation generator is used in conjunction; when the output power is less than 30W, the blood vessel can be coagulated; the effective length is 40-70cm; the opening of the scissors is 4-8mm. 8. A low temperature endoscope blood vessel collection method, characterized in that it contains the following steps; cryocoagulation scissors collection step and bipolar scissors collection step, Two collection steps with bipolar scissors: first, the blood vessel is ligated by the high temperature generated by the electric current, and then the blood vessel is cut off by two scissor blades; Collection steps of low-temperature electrocoagulation scissors: The scissor blades of low-temperature electrocoagulation scissors cannot cut blood vessels directly. When in use, the scissors clamp the blood vessels and ligate the blood vessels at a relatively low temperature through an electric current. After the ligation is completed, the blood vessels are automatically clamped off. 9. A kind of low-temperature endoscope blood vessel collection method according to claim 8, is characterized in that comprising the following steps: first insert the endoscope into the free sleeve, and install the free head; Put the short-mouthed trocar on the cannula, insert the free head into the surgical site through the short-mouthed trocar, and push it toward the target; When the free head reaches the surgical site, take out the free sleeve and pull out the endoscope from it; Insert the endoscope into the endoscope through hole of the collection cannula, insert low-temperature electrocoagulation scissors or bipolar scissors into the through hole of the scissors, and insert the collection cannula into the surgical site through a short trocar; Under the monitoring of the endoscope, push the c-ring to the target blood vessel. If the lens is blurred by blood or fat, connect the injection port of the cleaning solution to a 5cc normal saline syringe, and push the syringe to spray from the lens flushing hole of the c-ring Saline solution to clean the lens; Advance low-temperature electrocoagulation scissors or bipolar scissors to the target site, coagulate and cut blood vessel branches; After the procedure, remove the collection cannula and scissors.