Pre-filled catheter flusher

Abstract

The utility model relates to the technical field of medical instruments, in particular to a pre-filling type catheter flusher which comprises a sleeve, a cap, a piston, a push rod and a hand pushing part, one end of the sleeve is provided with a circular ring platform, the circular ring platform is provided with two limiting holes, the axial directions of the limiting holes are parallel to the axial direction of the sleeve, and the two limiting holes are symmetrically arranged relative to the axial direction of the sleeve. The other end of the sleeve is provided with a liquid outlet used for being connected with a positive pressure connector, the cap is detachably connected to the liquid outlet and used for preventing liquid leakage of the liquid outlet, the piston is slidably connected into the sleeve, one end of the push rod is connected with the piston, the hand push part is connected to the other end of the push rod, and a limiting rod is arranged below the hand push part. The two limiting rods are symmetrically arranged in the axial direction of the sleeve, the limiting rods are parallel to the axial direction of the sleeve, the limiting rods are in sliding connection with the limiting holes, buckles matched with the limiting holes are arranged on the limiting rods, and the piston cannot rebound through limiting of the buckles and the limiting holes, so that the push rod is limited, and blood backflow is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a pre-filled catheter flusher. Background Art

[0002] In the current existing technology, medical staff need to push the piston in the prefilled catheter flusher to the bottom to complete the flushing of the catheter and the needle. The extrusion deformation of the piston will produce a certain distance of rebound, causing the flushing liquid to flow back into the liquid storage cavity, and then causing blood to flow back into the catheter cavity and coagulate, resulting in clogging of the catheter, thereby affecting the health of the patient. Therefore, there is an urgent need for a prefilled catheter flusher that can prevent blood from flowing back after flushing is completed, thereby reducing the problem of catheter clogging. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a prefilled catheter flusher which can prevent blood from flowing back after flushing is completed, thereby reducing the problem of catheter blockage.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a prefilled catheter flusher, comprising:

[0005] A sleeve, one end of the sleeve is provided with a circular platform, the circular platform is provided with two limiting holes, the axial direction of the limiting holes is parallel to the axial direction of the sleeve, the two limiting holes are symmetrically arranged with respect to the axial direction of the sleeve, and the other end of the sleeve is provided with a liquid outlet for connecting a positive pressure joint;

[0006] A cover cap is detachably connected to the liquid outlet and is used to prevent liquid leakage from the liquid outlet;

[0007] A piston slidably connected in the sleeve;

[0008] A push rod, one end of which is connected to the piston;

[0009] A hand push part, the hand push part is connected to the other end of the push rod, a limit rod is provided below the hand push part, the two limit rods are symmetrically arranged with respect to the axis of the sleeve, the limit rods are parallel to the axis of the sleeve, the limit rods are slidably connected with the limit hole, and a buckle matching with the limit hole is provided on the limit rod;

[0010] In a certain state, the piston abuts against the bottom of the sleeve, and the buckle is engaged with the limiting hole.

[0011] Furthermore, the cap is provided with an external thread, and the liquid outlet is provided with an internal thread matching the external thread.

[0012] Furthermore, the prefilled catheter flusher also includes a disinfection tube and a disinfection cap. The disinfection tube is connected to the outer wall of the sleeve near one end of the liquid outlet. The outer wall of the sleeve, the disinfection cap and the disinfection tube form a disinfection cavity. The disinfection cap and the port of the disinfection tube are interference fit.

[0013] Furthermore, the shape of the hand-pushing part is a circle, and the distance between the hand-pushing part and the circular platform is equal to the distance between the piston and the bottom of the sleeve.

[0014] Furthermore, the outer wall of the sleeve is provided with scale lines.

[0015] The beneficial effects of the utility model are: it includes a hand-push part, a limiting rod, a circular platform, a buckle and a limiting hole. The hand-push part is pressed to move the limiting rod downward. When the piston abuts against the bottom of the sleeve, the hand-push part is pressed, the piston is deformed, and the buckle is engaged with the limiting hole, so that the piston cannot rebound, thereby preventing blood from flowing back. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The present invention is a schematic structural diagram of a prefilled catheter flusher according to a specific embodiment of the present invention.

[0017] Description of symbols

[0018] 1. Sleeve; 11. Circular ring platform; 111. Limiting hole; 12. Liquid outlet; 121. Internal thread; 2. Cover cap; 21. External thread; 3. Piston; 4. Push rod; 5. Hand push part; 51. Limiting rod; 511. Buckle; 6. Disinfection tube; 7. Disinfection cap; 8. Disinfection chamber. DETAILED DESCRIPTION

[0019] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0020] Please refer to Figure 1 , a prefilled catheter flusher, comprising:

[0021] A sleeve 1, one end of the sleeve 1 is provided with a circular platform 11, the circular platform 11 is provided with two limiting holes 111, the axial direction of the limiting holes 111 is parallel to the axial direction of the sleeve 1, the two limiting holes 111 are symmetrically arranged with respect to the axial direction of the sleeve 1, and the other end of the sleeve 1 is provided with a liquid outlet 12 for connecting a positive pressure joint;

[0022] A cover cap 2, which is detachably connected to the liquid outlet 12, and is used to prevent liquid leakage from the liquid outlet 12;

[0023] A piston 3, which is slidably connected to the sleeve 1;

[0024] A push rod 4, one end of which is connected to the piston 3;

[0025] The hand-pushing part 5 is connected to the other end of the push rod 4. A limiting rod 51 is provided below the hand-pushing part 5. The two limiting rods 51 are symmetrically arranged with respect to the axial direction of the sleeve 1. The limiting rods 51 are parallel to the axial direction of the sleeve 1. The limiting rods 51 are slidably connected with the limiting holes 111. The limiting rods 51 are provided with buckles 511 that match the limiting holes 111.

[0026] In a certain state, the piston 3 abuts against the bottom of the sleeve 1 , and the buckle 511 is engaged with the limiting hole 111 .

[0027] In the above embodiment, the medical staff removes the cap 2, connects the positive pressure connector to the liquid outlet 12 of the sleeve 1, and then places the thumb of the finger against the push part 5, and squeezes the flushing liquid into the catheter of the positive pressure connector in a pulse pressing manner to flush it. When the piston 3 contacts the bottom of the sleeve 1, the piston 3 deforms and rebounds. At this time, the buckle 511 on the limiting rod 51 is engaged with the limiting hole 111. The buckle 511 limits the push rod 4, so that the piston 3 cannot be elastic, and the flushing liquid cannot return to the sleeve 1. At the same time, it also prevents blood from flowing back into the catheter cavity. Compared with the prior art, after flushing is completed, blood reflux can be prevented, thereby reducing the problem of catheter blockage.

[0028] As an optional implementation, the cap 2 is provided with an external thread 21 , and the liquid outlet 12 is provided with an internal thread 121 matching the external thread 21 .

[0029] In the above embodiments, the cover cap 2 is threadedly connected to the liquid outlet 12 , thereby preventing the liquid in the sleeve 1 from leaking out of the cover cap 2 .

[0030] As an optional embodiment, the prefilled catheter flusher also includes a disinfection tube 6 and a disinfection cap 7. The disinfection tube 6 is connected to the outer wall of the sleeve 1 at one end thereof close to the liquid outlet 12. The outer wall of the sleeve 1, the disinfection cap 7 and the disinfection tube 6 form a disinfection cavity 8. The disinfection cap 7 and the disinfection tube 6 have an interference fit.

[0031] In the above embodiment, during the production process, the sterilized cotton is put into the sterilization chamber from the opening of the sterilization tube 6, and then covered with the sterilization cap 7 to prevent the liquid in the cap 2 and the sleeve 1 from being contaminated by the outside world before use.

[0032] As an optional implementation, the hand-pushing portion 5 is in the shape of a circle, and the distance between the hand-pushing portion 5 and the annular platform 11 is equal to the distance between the piston 3 and the bottom of the sleeve 1 .

[0033] In the above embodiment, by setting the diameter of the hand-push part 5 to be larger than the annular platform 11, when the hand-push part 5 is pushed, when the piston 3 reaches the bottom of the sleeve 1, the hand-push part 5 is limited by the annular platform 11 and cannot be pushed forward, thereby reducing the deformation of the piston 3 and preventing blood return.

[0034] As an optional implementation, the outer wall of the sleeve 1 is provided with scale lines.

[0035] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A prefilled catheter flusher, characterized in that: include: A sleeve, one end of the sleeve is provided with a circular platform, the circular platform is provided with two limiting holes, the axial direction of the limiting holes is parallel to the axial direction of the sleeve, the two limiting holes are symmetrically arranged with respect to the axial direction of the sleeve, and the other end of the sleeve is provided with a liquid outlet for connecting a positive pressure joint; A cover cap is detachably connected to the liquid outlet and is used to prevent liquid leakage from the liquid outlet; A piston slidably connected in the sleeve; A push rod, one end of which is connected to the piston; A hand push part, the hand push part is connected to the other end of the push rod, a limit rod is provided below the hand push part, the two limit rods are symmetrically arranged with respect to the axis of the sleeve, the limit rods are parallel to the axis of the sleeve, the limit rods are slidably connected with the limit hole, and a buckle matching with the limit hole is provided on the limit rod; In a certain state, the piston abuts against the bottom of the sleeve, and the buckle is engaged with the limiting hole; The cap is provided with an external thread, and the liquid outlet is provided with an internal thread matching the external thread; The prefilled catheter flusher also includes a disinfection tube and a disinfection cap. The disinfection tube is connected to the outer wall of the sleeve near one end of the liquid outlet. The outer wall of the sleeve, the disinfection cap and the disinfection tube form a disinfection cavity. The disinfection cap and the port of the disinfection tube are interference fit.

2. The prefilled catheter flusher according to claim 1, characterized in that: The shape of the hand-pushing part is a circle, and the distance between the hand-pushing part and the circular ring platform is equal to the distance between the piston and the bottom of the sleeve.

3. The prefilled catheter flusher according to claim 1, characterized in that: The outer wall of the sleeve is provided with scale lines.

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