CN211962260U

CN211962260U - Conical forceps for arteriovenous intubation operation

Info

Publication number: CN211962260U
Application number: CN201922213603.0U
Authority: CN
Inventors: 赵进; 孟照俊; 苟玮; 孙晓明; 胡浩; 谷文媛
Original assignee: Xian Jiaotong University
Current assignee: Xian Jiaotong University
Priority date: 2019-12-11
Filing date: 2019-12-11
Publication date: 2020-11-20
Anticipated expiration: 2029-12-11

Abstract

The utility model discloses a circular cone tweezers are used in arteriovenous intubate operation, include: the forceps comprise two forceps arms, one ends of the two forceps arms are fixed, an included angle is formed between the forceps arms, the end part of the other end of each forceps arm of the surgical forceps is connected with a forceps head, the forceps heads are L-shaped cone shapes, the conical surface is hollow, the front end of each L-shaped cone is an arc surface, the L-shaped conical hollow surfaces of the forceps heads of the two forceps arms are combined into a cone shape, the funnel shape is formed, the diameter of the front end of each L-shaped cone is 0.05-0.1mm, the diameter of the rear end (4) of each L-shaped cone is 0.1-0.2mm, and the length of. The forceps arms are controlled to open and close the forceps tip L-shaped cone at the tail ends of the forceps arms, so that the catheter can be inserted into the forceps arms, and the PVC pipe is guided to be smoothly inserted into a blood vessel. The surface of the blood vessel is treated by the heparin coating, so that the injury to the blood vessel wall and blood components can be reduced, and the operation is finished.

Description

Conical forceps for arteriovenous intubation operation

Technical Field

The utility model belongs to medicine animal experiment apparatus field, specific theory is a sound arteries and veins intubate surgical instruments, in particular to sound arteries and veins intubate circular cone tweezers for operation.

Background

When rabbits are used as experimental animals in zoology or mechanomy experiments, techniques such as arterial intubation, venous intubation, ureter intubation and the like are common operations, and intubation is often required to be led out of the bodies of the experimental animals for operations such as blood pressure measurement, blood sampling, drug administration or extracorporeal circulation. Neck arteriovenous intubation often becomes a key link for success or failure of an experiment in experimental operation, and once the neck arteriovenous intubation fails, the accuracy of an experimental result is influenced by a light person, and a heavy person causes death of rabbits. The operation has higher requirement on the manual method, students who perform experimental operation often cannot insert the cannula after cutting because of inexperience, tension and the like, and the experiment fails because the position of the cut cannot be found by twisting the blood vessel and the blood vessel is easily broken by further cutting.

Intubation is therefore a very common procedure. The market is concerned, and the conical forceps for arteriovenous intubation operation are not produced yet. In the experimental operation process of the rabbits, a cannula needs to be led out from the body of an experimental animal for operations such as blood pressure measurement, blood sampling, drug administration or extracorporeal circulation. The two ends of the blood vessel are fixed by artery clamps, the V-shaped opening is cut downwards along the blood vessel by an angle of 45 degrees by surgical scissors, and then the blood vessel is intubated. At present, the operation is mostly performed in China by hooking the front end of the bent surgical forceps with a blood vessel cut or hooking a needle to pick up the blood vessel cut to insert a PVC catheter into the blood vessel, blood flows out after the blood vessel is cut in the operation process, the blood vessel is naturally flattened and thin and soft, if no auxiliary instrument is used for inserting the catheter into the blood vessel, the whole process is difficult to complete, the blood vessel is easy to slip and prolong the operation time, the operation is hard, the experiment course is given to students, and the operation experiment causes difficulty.

Disclosure of Invention

The utility model aims to provide a device for measuring blood pressure, collecting blood and giving medicine from the veins of the animal; the forceps for the arteriovenous intubation for the vascular intubation operation is convenient to use and safe to operate.

The technical scheme of the utility model is solved like this:

a conical forceps for arteriovenous intubation comprises: the forceps comprise two forceps arms, one ends of the two forceps arms are fixed, an included angle is formed between the forceps arms, the end part of the other end of each forceps arm of the surgical forceps is connected with a forceps head, the forceps heads are L-shaped cone shapes, the conical surface is hollow, the front end of each L-shaped cone is an arc surface, the L-shaped conical hollow surfaces of the forceps heads of the two forceps arms are combined into a cone shape, the funnel shape is formed, the diameter of the front end of each L-shaped cone is 0.05-0.1mm, the diameter of the rear end (4) of each L-shaped cone is 0.1-0.2mm, and the length of.

The included angle between the forceps arms is 30 degrees.

The conical surface at the front end of the L-shaped cone is hollow, and the inner diameter of the L-shaped cone is 0.02-0.03 mm.

The utility model discloses improve the tweezers head part of operation tweezers into the circular cone shape, leak hopper-shaped by the synthetic formation circular cone of two concave circular arc surfaces, through the tweezers sharp L shape circular cone switching of tweezers arm control tweezers arm end to realize that the pipe can from inserting, guide PVC pipe (diameter 1mm) inserts the blood vessel smoothly. The surface is treated by a heparin coating, so that the damage to the vessel wall and blood components can be reduced, and the operation is finished.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

1-a forceps arm, 2-a conical forceps head, a 3-L-shaped cone front end, a 4-L-shaped cone rear end, a 5-a conical forceps head part and a 6-a conical forceps head whole body;

figure 2 is a schematic structural view of the folding of the forceps arms of the utility model;

figure 3 is the overall structure schematic diagram of the L-shaped cone forceps head of the utility model;

figure 4 is a partial structure schematic view of the L-shaped cone forceps head of the utility model;

fig. 5 is a schematic view of the usage state of the present invention.

Detailed Description

Referring to fig. 1-4, the surgical forceps of the present invention generally includes two forceps arms (110mm), one end of each of the two forceps arms is fixed, and the included angle between the forceps arms is 30 degrees. When the forceps is used, the forceps arms are controlled to control the opening and closing of the forceps tips at the tail ends of the forceps arms, so that the tissue is clamped. The surgical forceps are changed, on the basis of the surgical forceps, the surgical forceps are changed into the L-shaped conical surgical forceps, the L-shaped surgical forceps comprise two forceps arms (110mm), the L-shaped head of the surgical forceps is a cone with the outer radius of 0.05mm (the diameter of 0.1mm), the conical surface at the front end is hollow (0.02mm), the front surface of the conical head is an arc surface, and the rear part of the L-shaped surgical forceps is synthesized by two concave arc surfaces to form a conical funnel shape, wherein the radius of the rear part of the L-shaped surgical forceps is 0.1mm (the. The pair of forceps arms are 12mm long and 110mm long, one ends of the two forceps arms are fixed, and the included angle between the forceps arms is 30 degrees. When the multifunctional forceps is used, the forceps arms are controlled to control the opening and closing of the L-shaped cones at the tail ends of the forceps arms, so that the guide tube can be inserted into the forceps arms, and the PVC tube (with the diameter of 1mm) is guided to be smoothly inserted into a blood vessel. The surface is treated by a heparin coating, so that the damage to the vessel wall and blood components can be reduced, and the operation is finished.

The utility model discloses circular cone tweezers are used in arteriovenous intubate operation, include: two forceps arms (110mm), one end of two forceps arms is fixed mutually, and the contained angle between the forceps arms is 30 degrees. The head of the surgical forceps L is a cone with the outer radius of 0.05mm (the diameter of 0.1mm), the conical surface at the front end is hollow (0.02mm), the front surface of the conical head is an arc surface, the front inner side of the conical head of the forceps arm with the rear part radius of 0.1mm (the diameter of 0.2mm) of the L shape is provided with a groove, and the groove arc surfaces of the two forceps arms are synthesized to form a conical funnel shape. (length 12mm), L shape circular cone head, its head is the cone appearance, and the conical head inside is hollow, and the conical head front is the arc surface, can expand the blood vessel when inserting the blood vessel cut, and the guide PVC pipe inserts the blood vessel smoothly, and the classmate who is used for blood pressure to measure and makes the experimental operation carries out uses conveniently, shortens operation experimental time.

Referring to FIG. 5, a V-shaped small opening (1/3 or 1/2 with a diameter of about pipe diameter) is cut on the vein at the position close to the ligature at the distal end by an ophthalmic scissors with a 45-degree angle in the centripetal direction, and a PVC pipe (with a diameter of 1mm) is guided to be smoothly inserted into the blood vessel by inserting a conical forceps into the incision of the blood vessel

Weighing rabbits, locally infiltrating and anesthetizing the middle of the neck with 1% procaine, fixing, shearing, performing longitudinal skin incision (length of 2-3 cm) on the middle of the neck, separating fascia and muscle gaps by hemostatic forceps blunt, dissociating to obtain the right common carotid artery with length of 2-3 cm, threading 2 silk threads below the catheter, ligating the distal end of the catheter, clamping the proximal end of the catheter by an artery clamp, cutting 1/3-1/2 of the diameter of a blood vessel by an ophthalmic scissors with a 45-degree V-shaped incision on the upper surface, filling 1% heparin normal saline into the artery catheter, inserting 1.5-2.0 cm of common carotid artery into the end of the heart, ligating the artery by the silk threads, fixing, removing the artery clamp, then the catheter is connected with the three-way pipe, the forceps tip L-shaped cone at the tail end of the forceps arm is controlled to be opened and closed by operating the forceps arm, therefore, the catheter can be inserted into the blood vessel, the PVC pipe (with the diameter of 1mm) is guided to be smoothly inserted into the blood vessel, and the instrument can record the insertion.

Claims

1. A conical forceps for arteriovenous intubation comprises: the forceps arms (1) are characterized in that one ends of the two forceps arms are fixed, an included angle is formed between the forceps arms, forceps heads are connected to the end portions (2) of the other ends of the forceps arms of the surgical forceps, the forceps heads are L-shaped cone shapes, the conical surfaces are hollow, the front ends of the L-shaped cones are arc surfaces, and the L-shaped cone hollow surfaces of the forceps heads of the two forceps arms are combined into a cone shape.

2. The conical forceps for arteriovenous intubation according to claim 1, wherein the diameter of the front end (3) of the L-shaped cone is 0.05-0.1mm, the diameter of the rear end (4) of the L-shaped cone is 0.1-0.2mm, and the length of the end part (2) of the forceps is 11-12 mm.

3. The conical forceps for arteriovenous intubation according to claim 1, wherein the included angle between the forceps arms is 30 degrees.

4. The conical forceps for arteriovenous intubation according to claim 1, wherein the conical surface of the front end (3) of the L-shaped cone is hollow and has an inner diameter of 0.02-0.03 mm.