CN211513055U - Pre-filled catheter flusher - Google Patents

Abstract

The utility model discloses a prefilled catheter flusher, which comprises a needle cylinder, a push-pull rod and a piston, wherein the piston is arranged inside the needle cylinder, one end of the push-pull rod is connected with the piston, the other end extends out of the needle cylinder, the front end of the needle cylinder is in threaded connection with a shell, a protective cap is embedded in the shell, one end of the protective cap, which faces the needle cylinder, is provided with a blind hole for inserting a liquid outlet pipe at the front end of the needle cylinder, and the liquid outlet pipe is in sealed fit with the blind hole after being inserted into the blind hole; the utility model discloses a setting of shell inlays in the shell and is equipped with the helmet, and the helmet is provided with the drain pipe male blind hole that can supply the cylinder front end towards the one end of cylinder, and the drain pipe is sealed to be cooperated with the blind hole after inserting in the blind hole, so, compares with traditional pre-filling formula pipe flusher, has effectively improved the sealed effect to pre-filling formula pipe flusher.

Description

Pre-filled catheter flusher

Technical Field

The utility model relates to the technical field of medical equipment, concretely relates to pre-filling type catheter flusher.

Background

The prefilled catheter flusher is the simplest and most effective device for flushing indwelling catheters, and chinese patent No. ZL201620953708.3 discloses a prefilled catheter flusher, which is implemented by installing a sealing cap at the front end of a syringe in order to prevent the flushing fluid in the prefilled catheter flusher from leaking and to prevent bacterial infection, but in the actual use process, because the sealing cap is connected with the syringe only by means of threaded connection, there is a disadvantage of poor sealing effect of the prefilled catheter flusher.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the utility model provides a pre-filling type pipe flusher, its setting through the shell inlays in the shell and is equipped with the helmet, and the helmet is provided with the drain pipe male blind hole that can supply the cylinder front end towards the one end of cylinder, and the drain pipe is sealed to cooperate with the blind hole after inserting in the blind hole, so, compares with traditional pre-filling type pipe flusher, has effectively improved the sealed effect to pre-filling type pipe flusher.

The utility model discloses a pre-filled type pipe flusher, including cylinder, push-and-pull rod and piston, the piston is installed in the inside of cylinder, and the one end and the piston connection of push-and-pull rod, the other end stretch out outside the cylinder, and the front end threaded connection of cylinder has the shell, inlays in the shell to be equipped with the helmet, and the helmet is provided with the drain pipe male blind hole that can supply the cylinder front end towards the one end of cylinder, and the drain pipe inserts back and blind hole seal fit in the blind hole.

The utility model discloses a pre-filled catheter flusher, wherein, the inner peripheral wall of the blind hole is provided with an annular conical surface which is used for matching with the outer peripheral wall of the liquid outlet pipe, and after the liquid outlet pipe is inserted into the blind hole, the outer peripheral wall of the liquid outlet pipe is in sealing fit with the annular conical surface; by adopting the structure, the liquid outlet pipe can be better matched with the blind hole in a sealing way.

The pre-filled catheter flusher of the utility model is characterized in that a bulge for partially inserting into the liquid outlet pipe is integrally formed on the inner bottom of the blind hole, and the bulge is hermetically embedded with the liquid outlet pipe after the bulge is inserted into the liquid outlet pipe; through bellied setting, the arch can with the sealed gomphosis of drain pipe, so, can improve the sealed effect of helmet to the drain pipe.

The utility model discloses a pre-filled catheter flusher, wherein, the front end integrated into one piece of cylinder has the annular boss of cover outside the drain pipe, and annular boss and drain pipe coaxial arrangement, the shell towards the one end of cylinder be provided with insert the annular step in annular boss, annular step and annular boss threaded connection; by adopting such a structure, the housing can be screwed with the cylinder reliably.

The utility model discloses a pre-filled catheter flusher, wherein, the outer peripheral wall of the protective cap is provided with an annular clamping groove, and the inner peripheral wall of the shell is provided with an annular clamping table which is matched and clamped with the annular clamping groove; by adopting such a structure, the protective cap can be reliably fitted to the housing.

The utility model discloses a pre-filled catheter flusher, wherein, a plurality of anti-skid convex ribs which are circumferentially and uniformly distributed are arranged on the peripheral wall of the shell; through the setting of the anti-skidding convex rib, when the shell is screwed, the anti-skidding effect can be played.

The pre-filled catheter flusher of the utility model is characterized in that the protective cap is made of butyl rubber.

The pre-filled catheter flusher of the utility model is characterized in that the shell and the protective cap are made of butyl rubber integrally.

The utility model discloses a setting of shell inlays in the shell and is equipped with the helmet, and the helmet is provided with the drain pipe male blind hole that can supply the cylinder front end towards the one end of cylinder, and the drain pipe is sealed to be cooperated with the blind hole after inserting in the blind hole, so, compares with traditional pre-filling formula pipe flusher, has effectively improved the sealed effect to pre-filling formula pipe flusher.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic sectional view of the present invention.

Detailed Description

In the following description, numerous implementation details are set forth in order to provide a more thorough understanding of the present invention. It should be understood, however, that these implementation details should not be used to limit the invention. That is, in some embodiments of the invention, details of these implementations are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for description purposes, not specifically referring to the order or sequence, and are not intended to limit the present invention, but only to distinguish the components or operations described in the same technical terms, and are not to be construed as indicating or implying any relative importance or implicit indication of the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Implementation mode one

The utility model discloses a pre-filled type catheter flusher, including cylinder 1, push-and-pull rod 2 and piston 3, piston 3 installs in the inside of cylinder 1, and one end and the piston 3 of push-and-pull rod 2 are connected, and the other end stretches out outside cylinder 1, and the front end threaded connection of cylinder 1 has shell 4, is inlayed in shell 4 and is equipped with helmet 5, and helmet 5 is provided with the blind hole 51 that can supply the drain pipe 11 of cylinder 1 front end to insert towards the one end of cylinder 1, and the drain pipe 11 seals up with blind hole 51 after inserting into blind hole 51 and cooperates; the utility model discloses a setting of shell inlays in the shell and is equipped with the helmet, and the helmet is provided with the drain pipe male blind hole that can supply the cylinder front end towards the one end of cylinder, and the drain pipe is sealed to be cooperated with the blind hole after inserting in the blind hole, so, compares with traditional pre-filling formula pipe flusher, has effectively improved the sealed effect to pre-filling formula pipe flusher.

An annular conical surface 52 matched with the outer peripheral wall of the liquid outlet pipe 11 is arranged on the inner peripheral wall of the blind hole 51, and after the liquid outlet pipe 11 is inserted into the blind hole 51, the outer peripheral wall of the liquid outlet pipe 11 is in sealing fit with the annular conical surface 52; by adopting the structure, the liquid outlet pipe can be better matched with the blind hole in a sealing way.

A bulge 53 for partially inserting into the liquid outlet pipe 11 is integrally formed on the inner bottom of the blind hole 51, and after the bulge 53 is inserted into the liquid outlet pipe 11, the bulge 53 is hermetically embedded with the liquid outlet pipe 11; through bellied setting, the arch can with the sealed gomphosis of drain pipe, so, can improve the sealed effect of helmet to the drain pipe.

An annular boss 12 sleeved outside the liquid outlet pipe 11 is integrally formed at the front end of the needle cylinder 1, the annular boss 12 and the liquid outlet pipe 11 are coaxially arranged, an annular step 41 inserted into the annular boss 12 is arranged at one end, facing the needle cylinder 1, of the shell 4, and the annular step 41 is in threaded connection with the annular boss 12; by adopting such a structure, the housing can be screwed with the cylinder reliably.

An annular clamping groove 54 is formed in the outer peripheral wall of the protective cap 5, and an annular clamping table 42 which is matched and clamped with the annular clamping groove 54 is arranged on the inner peripheral wall of the shell 4; by adopting such a structure, the protective cap can be reliably fitted to the housing.

The peripheral wall of the shell 4 is provided with a plurality of anti-skid convex ribs 43 which are uniformly distributed in the circumferential direction; through the setting of the anti-skidding convex rib, when the shell is screwed, the anti-skidding effect can be played.

The cap 5 is made of butyl rubber.

Second embodiment

The difference from the first embodiment is that: the housing 4 and the cap 5 are integrally made of butyl rubber.

The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims (8)

1. The utility model provides a pre-filled type pipe flusher, includes cylinder (1), push-and-pull rod (2) and piston (3), piston (3) are installed in the inside of cylinder (1), the one end and the piston (3) of push-and-pull rod (2) are connected, and the other end stretches out outside cylinder (1), its characterized in that: the front end threaded connection of cylinder (1) has shell (4), inlay in shell (4) and be equipped with helmet (5), the one end of helmet (5) orientation cylinder (1) is provided with can supply drain pipe (11) male blind hole (51) of cylinder (1) front end, drain pipe (11) are inserted in blind hole (51) back and blind hole (51) sealed fit.

2. A pre-filled catheter flusher according to claim 1, wherein the inner peripheral wall of the blind hole (51) is provided with an annular tapered surface (52) for matching with the outer peripheral wall of the liquid outlet pipe (11), and the outer peripheral wall of the liquid outlet pipe (11) is in sealing fit with the annular tapered surface (52) after the liquid outlet pipe (11) is inserted into the blind hole (51).

3. A pre-filled catheter flusher according to claim 1, wherein a protrusion (53) for partial insertion into the liquid outlet pipe (11) is integrally formed on the inner bottom of the blind hole (51), and the protrusion (53) is in sealing engagement with the liquid outlet pipe (11) after the protrusion (53) is inserted into the liquid outlet pipe (11).

4. The pre-filled catheter flusher according to claim 1, wherein an annular boss (12) sleeved outside the liquid outlet pipe (11) is integrally formed at the front end of the needle cylinder (1), the annular boss (12) is coaxially arranged with the liquid outlet pipe (11), an annular step (41) inserted into the annular boss (12) is arranged at one end, facing the needle cylinder (1), of the housing (4), and the annular step (41) is in threaded connection with the annular boss (12).

5. A pre-filled catheter flusher according to claim 1, wherein an annular clamping groove (54) is formed in the outer circumferential wall of the protective cap (5), and an annular clamping table (42) for being matched and clamped with the annular clamping groove (54) is formed in the inner circumferential wall of the housing (4).

6. A pre-filled catheter flusher according to claim 1, wherein the outer peripheral wall of the housing (4) is provided with a plurality of anti-slip ribs (43) which are evenly distributed in the circumferential direction.

7. A pre-filled catheter flusher according to claim 1, wherein the protective cap (5) is made of butyl rubber.

8. A pre-filled catheter flusher according to claim 1, wherein the housing (4) and the protective cap (5) are made in one piece of butyl rubber.

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