A kind of catheterTechnical field
The utility model belongs to medical instruments field more particularly to a kind of catheter.
Background technology
Catheter is one of common medical instrument of the clinical treatments such as urological department, and catheter can be through being per urethram inserted into bladderSo that drainage of urine comes out, after catheter is inserted into bladder, is stayed in there are one sacculus close to catheter head end and fix urethral catheterization in bladderPipe collects urine to make catheter be not easy, by connecting drainage bag.
The urination hole of existing catheter is opened in the front end of sacculus, while sacculus is located at fundus of bladder for fixing urethral catheterizationPipe, since the position in urination hole makes patient through can not be caused to urinate by the urine discharge for being located at fundus of bladder in bladder when pleural drainageLiquid remains.
Invention content
Technical problem to be solved in the utility model is：In view of the deficienciess of the prior art, providing a kind of catheter.
To realize the purpose of the utility model, it is achieved using following technical scheme：A kind of catheter includes upper endClosed drainage tube, is molded over sacculus of the drainage tube close to blind end periphery, and the drainage tube side wall is equipped with along drainage length of tubeThe lower end in the urination hole of direction setting, the urination hole is concordant with sacculus lower end, and the sacculus side corresponds to the position in urination holeForm a leakage fluid dram.
Preferably：The length of the leakage fluid dram be more than the sacculus along drainage tube direction length two/One.
Preferably：Water injection pipe is installed in the drainage tube；The drainage tube, which is located in sacculus, forms water fillingHole；The water injection pipe is connected to by water injection hole with sacculus；The water injection pipe other end is connected with water filling connector；
Flush pipe is installed in the drainage tube；The closed end of the drainage tube forms rinse mouth；The flushingPipe is externally connected by rinse mouth；The flush pipe other end is connected with flush-through connection.
Preferably：The blind end of the drainage tube is dome-type end.
Compared with prior art, the utility model has the beneficial effects that：The catheter in use, the sacculus through noteIt is in swelling state after water and is fixed on bladder bottom, since the length of the leakage fluid dram is more than the sacculus along the drainageThe half of pipe direction length then will not cover the leakage fluid dram and the hole that will urinate when the sacculus and bladder inner faces contactIt blocks, therefore intravesical urine will not be such that urine is remained in patient's bladder because hole site of urinating is higher than sacculus.
Description of the drawings
Fig. 1 is structural schematic diagram of the utility model under sacculus charging state.
Fig. 2 is the position view in urination hole.
Fig. 3 is schematic cross-sectional view of the utility model under sacculus charging state.
11, drainage tube；12, sacculus；121, leakage fluid dram；13, flush pipe；131, rinse mouth；14, water injection pipe；141, water fillingHole；15, urination hole；17, water filling connector；18, flush-through connection.
Specific implementation mode
Specific embodiment of the present utility model is made a detailed explanation below according to attached drawing.
Embodiment 1
According to Fig. 1 to Fig. 3, a kind of catheter described in the present embodiment includes the drainage tube 11 of upper end closed, moldingIn drainage tube close to the sacculus 12 of blind end periphery.The sacculus is tightly attached to the drainage pipe outer wall, institute in non-charging stateSince the hydraulic pressure of balloon interior makes the balloon inflation when stating sacculus charging state.
The drainage tube side wall is equipped with along the urination hole 15 that drainage tube length direction is arranged, the lower end in the urination hole and ballCapsule lower end is concordant；The position that the sacculus side corresponds to urination hole forms a leakage fluid dram 121, i.e., the bottom end of the described leakage fluid dram withThe bottom end in the urination hole is concordant.Intravesical urine is by leakage fluid dram flows through urination hole into the inner cavity of the drainage tube.
The length of the leakage fluid dram is more than half of the sacculus along drainage tube direction length.
Water injection pipe 14 is installed in the drainage tube；The drainage tube, which is located in sacculus, forms water injection hole 141；The noteWater pipe is connected to by water injection hole with sacculus；The water injection pipe other end is connected with water filling connector 17.
Flush pipe 13 is installed in the drainage tube；The closed end of the drainage tube forms rinse mouth 131；It is describedFlush pipe is externally connected by rinse mouth；The flush pipe other end is connected with flush-through connection 18.
The blind end of the drainage tube is dome-type end.
The catheter in use, the sacculus after water filling in swelling state and being fixed on bladder bottom, due toThe length of the leakage fluid dram is more than the sacculus along the half of drainage tube direction length, then in the sacculus and bladderFace will not cover the leakage fluid dram and the hole plug that will urinate when contacting, therefore intravesical urine will not be high because of urination hole siteUrine is set to be remained in patient's bladder in sacculus.