Rat varicocele model build tool and its application methodTechnical field
The invention belongs to rats with experimental varicocele model construction techniques, it is specifically related to a kind of rat varicocele mouldType the build tool and its application method.
Background technique
Rat model is used in spermatic vein research, and constructs this model, needs to make the renal vein constriction of ratThe left spermatic vein 1 obtained as shown in figure 1 imports left renal vein 2, and 3 in Fig. 1 are inferior caval vein.Currently, the surgical procedure is usually adoptedWith: piece thin stick of metal of self-control (generally uses wire ligature needle), is placed on 2 surface of renal vein, then that renal vein 2 and metal is thinStick knots (at Figure 1A) together, then the thin stick of metal is extracted out, is then sprung back again by renal vein, cannot because being limited by knottingOriginal diameter is sprung back to, to realize renal vein constriction.After renal vein is narrow, spermatic vein reflux also can be impacted, thatVein needed for model can be formed broadens, varicose.
But above-mentioned traditional operation has the following problems: the 1. homemade thin bar gauge lattice disunities of metal, and rebound diameter is not easyControl, constriction are not accurate enough；2. extracting out for convenience, the thin club head of metal is generally more sharp, but due to relatively thin, when extraction notIt is easy to control, is easy to damage kidney and big blood vessel；It is easy to loosen 3. knotting on the thin stick of metal, is difficult to grasp, it too tightly can handleBlood vessel tying closes, and metal bar can't pump out, and the effect of constriction is not achieved in Tai Song again.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of rat varicocele model build tool and its makeWith method, it can facilitate and operate and keep constriction effect more accurate.
In order to solve the above-mentioned technical problem, the present invention adopts the following technical scheme that:
On the one hand, a kind of rat varicocele model build tool, including tool body and tool fitting, tool sheetBody includes handle and constriction stick, and the end of constriction stick is connected with handle upper end by turning joint, and the head end of constriction stick is in coneShape, outside are equipped with flexible cover sheet, and the barred body of constriction stick is cylindrical, and have a step on barred body, and before stepPortion is 0.8mm to the barred body diameter design that constriction knots；Tool fitting includes binding and clamp button, and binding one end has lineCircle, the other end penetrate coil to knot and live to fix by clamp clip after bypassing renal vein and barred body.
The flexible cover sheet is silica gel sheath or silica gel coat.
The binding other end is equipped with a scale, which passes through coil with binding to form diameter as the Zha Quan of 1mm.
The turning joint is hinge or pin framework.
On the other hand, a kind of application method of rat varicocele model build tool, comprising the following steps:
A. handle is set along inferior caval vein, and adjusts the angle of constriction stick by turning joint, keep constriction stick quiet along kidneyThe setting of arteries and veins surface；
B. its coil is penetrated to graduation position after bypassing renal vein and barred body at step using binding；
C. the binding after tightly being knotted using clamp clip；
D. it holds handle and extracts constriction stick out binding.
Using rat varicocele model build tool of the invention and its application method, have the advantages that
1, there is handle, convenient hand-held arrangement and extraction constriction stick；
2, constriction stick has step, positioning when convenient for knotting, and avoids sliding and influencing last precision；
3, diameter is fixed at constriction bastinade knot, and rebound diameter can be effectively controlled, so that constriction effect is more accurate；
4, the head end of constriction stick is equipped with flexible protective casing, can avoid when operation causing to damage to organ；
5, using the binding of knotting formula and clamp button is inserted in, so that knotting is more convenient, it can prevent from slipping or beat too tight.
Detailed description of the invention
Fig. 1 is the schematic illustration of rat model renal vein constriction；
Fig. 2 is the decomposition diagram of rat varicocele model build tool of the invention；
Fig. 3 is the use state diagram of rat varicocele model build tool of the invention.
Specific embodiment
Rat varicocele model build tool of the invention is as shown in Figure 2 to 3, mainly include tool body andTool fitting, tool body include handle 5 and constriction stick 4, and the design of handle 5 is convenient for operation, the constriction stick such as holding, put and extract4 end is connected with 5 upper end of handle by turning joint 6, which can be used the similar means such as hinge or pin shaft.Due to the difference between rat model, renal vein 2 and the practical angle of inferior caval vein 3 are simultaneously non-uniform, therefore by turning joint 6,Constriction stick 4 can carry out swinging around turning joint 6 according to actual needs, to adjust the angle between handle 5, meet constriction stick 4It is arranged along 2 surface of renal vein.The head end of constriction stick 4 is tapered, and convenient for the extraction after knotting, and the outside of taper head end is alsoEquipped with flexible cover sheet 7, which can be used the material such as silica gel and makes that corresponding cover is fixed or the materials such as silica gelCoating surface is made, and plays the role of causing damage in operation to avoid to organs such as peripheral vessels.The stick of constriction stick 4Body is cylindrical, and has the function of a step 8 (or identical radial convex/groove) on intermediate barred body, which is beatingIt can play the role of knotting for binding 9 when knot and positioning is provided, avoid sliding and influencing last precision.It, will by calculating repeatedlyThe barred body diameter design to knot positioned at 8 front of step to constriction is 0.8mm, and rebound diameter can be effectively controlled, so that constriction is imitatedFruit is more accurate；Tool fitting includes binding 9 and clamp button 10, and binding 9 uses sleeve type, i.e. one end has coil 11, anotherAround penetrating coil 11 after renal vein 2 and barred body to sleeve type knotting and living fixation by 10 clip of clamp, clamp button 10 can at endThe similar products such as U.S. Hem-o-lok (Brunswick) ligation clip are directly selected, cooperation binding can be tightened quickly, so that knottingIt is more convenient, and can prevent from slipping or beat too tight.
In addition, 9 other end of binding be equipped with a scale 12 or mark, the scale 12 with binding 9 pass through coil 11 withThe Zha Quan that diameter is 1mm or so is formed, is matched with the barred body that diameter design is 0.8mm, it is last so as to effective guaranteePrecision.
The application method of above-mentioned rat varicocele model build tool can comprise the following steps that
A. handle 5 is set along 3 surface of inferior caval vein, and adjusts the angle of constriction stick 4 by turning joint 6, make constrictionStick 4 is arranged along 2 surface of renal vein；
B. using binding 9 at the step 8 around penetrating its coil 11 after renal vein 2 and barred body to 12 position of scale, with intoRow sleeve type knots, and renal vein 2 is bound together with barred body；
C. the binding 9 after knotting is clamped using clamp button 10；
D. it holds handle 5 to extract constriction stick 4 out of binding 9 knotting circle out, be sprung back for renal vein 2.
But those of ordinary skill in the art it should be appreciated that more than embodiment be intended merely to illustrate thisInvention, and be not used as limitation of the invention, as long as in spirit of the invention, to embodiment described aboveVariation, modification will all fall within the scope of claims of the present invention.