CN214596768U - Special double-nipple injector for pre-filled double-cavity central venous catheter flushing and sealing tube - Google Patents

Abstract

The utility model discloses a special double-nipple injector for a pre-filling type double-cavity central venous catheter flushing and sealing tube, which comprises an injector body and a pintle arranged in the injector body and slidably connected with the injector body, wherein a piston which can be matched with the injector body is arranged on the pintle, and one end of the injector body, which is far away from the pintle, is provided with more than two nipples communicated with the inside of the injector body, the utility model discloses a more than two nipples are arranged on the injector body, and the nipples can be respectively used for being connected with a main tube and a side tube of the double-cavity central venous catheter, the main tube and the side tube of the double-cavity central venous catheter can be simultaneously flushed by using one injector, the flushing is more labor-saving and convenient, the positive pressure state can be ensured all the time when the flushing and sealing tube is flushed by arranging a pintle stopping mechanism, thereby the requirement of the central venous catheter flushing and sealing tube is more met, preventing reverse flow.

Description

Special double-nipple injector for pre-filled double-cavity central venous catheter flushing and sealing tube

[ technical field ] A method for producing a semiconductor device

The utility model relates to the technical field of injectors, in particular to the technical field of central venous catheter flushing and sealing tube injectors.

[ background of the invention ]

Along with the development of science and technology and society, the central ductus venosus technique of two-chamber is extensively developed at hospital at all levels, and two-chamber central ductus venosus belongs to one kind of intravascular line, places in the great vein, and the use of two-chamber central ductus venosus needs the frequent maintenance towards the pipe to prevent that the pipe is inside to block up, influence the pipe normal use, current pipe washing method is mostly manual washing, with two syringes shutoff two-chamber simultaneously, the injection is washed simultaneously, the emergence that two-chamber central ductus venosus blocked up the pipe can effectively be prevented to the manual two-chamber simultaneous catheter of one hand blocking of two-chamber gimmick. The disadvantage is that the operation of two syringes by one hand is not easy to be controlled in practical operation, especially for operators with small hands.

[ Utility model ] content

The utility model aims at solving the problems in the prior art and providing a special double-nipple injector for a pre-filling type double-cavity central venous catheter flushing and sealing tube, which can conveniently and simultaneously flush the main and lateral double-cavity pipelines of the double-cavity central venous catheter.

In order to realize the above object, the utility model provides a special double-nipple syringe of pre-filling formula two-chamber central venous catheter flush tube, include the syringe body and locate this internal and with syringe body sliding connection's pintle, be equipped with on the pintle can with syringe body complex piston, keep away from on the syringe body the one end of pintle be equipped with more than two with the nipple of the inside intercommunication of syringe body, the syringe body with be equipped with between the pintle and be used for only allowing the pintle to the nipple end slides, prevents the pintle stopping mechanism that the pintle moves back.

Preferably, the pintle backstop mechanism comprises a plurality of pintle ratchets which are paved along the surface of the pintle, and a backstop pawl which can be matched with the pintle ratchets is arranged in the injector body.

Preferably, a ring-shaped spacer sleeve used for separating the check pawl from the pintle ratchet is detachably arranged between the check pawl and the pintle ratchet.

Preferably, a partition board is arranged in the injector body, and the partition board divides the interior of the injector body into more than two independent injection cavities.

Preferably, each nipple is respectively communicated with one injection cavity, and a pintle matched with the nipple is arranged in each injection cavity.

Preferably, a bolt for synchronously fixing all the pintle is detachably arranged between the pintle.

Preferably, the partition is integrally formed with the syringe body.

Preferably, the nipple is sleeved with a connecting nut, and one end of the connecting nut, which is close to the injector body, is rotatably connected with the nipple.

The utility model relates to a beneficial effect of special two nipple syringes of pre-filling formula two-chamber central venous catheter dashes seal pipe: the utility model discloses a set up two above nipples on with the syringe body, the nipple can be used for respectively with the main of two-chamber central venous catheter, the two chamber pipe ways of side are connected, use a syringe can be simultaneously to the main of two-chamber central venous catheter, the two chamber pipe ways of side are washed simultaneously, it is more laborsaving, it is convenient to wash, through setting up the positive pressure state of keeping throughout when pintle stopping mechanism can guarantee to dash and seal the pipe, more accord with the requirement that central venous catheter dashes and seals the pipe, there is the negative pressure in the pipeline when preventing to dash and seal the pipe and finish, thereby it forms the thrombus jam pipeline to cause the blood reflux to advance the lumen.

The features and advantages of the present invention will be described in detail by embodiments with reference to the accompanying drawings.

[ description of the drawings ]

Fig. 1 is a schematic view of a structure of a double-nipple injector of the present invention, which is used for a pre-filled double-lumen central venous catheter flush tube.

Fig. 2 is a schematic view of a main sectional view of a double-nipple injector of the present invention, which is used for a pre-filled double-lumen central venous catheter flush tube.

Fig. 3 is a schematic structural view of a pintle stopping mechanism of the double-nipple injector special for the pre-filled double-chamber central venous catheter flushing and sealing tube of the utility model.

Fig. 4 is a schematic structural view of a second main view of an embodiment of a double-nipple injector special for a pre-filled double-chamber central venous catheter flushing and sealing tube of the present invention.

Fig. 5 is a schematic view of a cross-sectional structure of a second main view of an embodiment of a dual-nipple injector dedicated for a pre-filled dual-chamber central venous catheter flush tube of the present invention.

Fig. 6 is a schematic structural view of two sides of an embodiment of a double-nipple injector special for a pre-filled double-cavity central venous catheter flushing and sealing tube of the present invention.

In the figure: 1-injector body, 2-pintle, 3-nipple, 4-pintle backstop mechanism, 5-clapboard, 6-bolt, 7-connecting nut, 8-piston, 11-injection cavity, 41-pintle ratchet, 42-backstop pawl and 43-ring spacer.

[ detailed description ] embodiments

In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described in detail through the accompanying drawings and embodiments. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the invention and not to limit the scope of the invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description of the present invention and simplification of description, but do not indicate or imply that the device or element to which the description refers must have a specific position, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The first embodiment is as follows:

referring to fig. 1, 2 and 3, the present invention relates to a double-nipple injector for a pre-filled double-chamber central venous catheter flush tube, which comprises an injector body 1 and a pintle 2 slidably connected with the injector body 1 and arranged in the injector body 1. The pintle 2 is provided with a piston 8 which can be matched with the injector body 1. One end of the injector body 1 far away from the pintle 2 is provided with two nipples 3 communicated with the inside of the injector body 1. A pintle retaining mechanism 4 for allowing the pintle 2 to slide only toward the nipple 3 and preventing the pintle 2 from retreating is provided between the injector body 1 and the pintle 2. In the embodiment, the two nipples 3 are arranged on the injector body 1, the two nipples 3 can be respectively used for being connected with the main cavity pipeline and the side cavity pipeline of the double-cavity central venous catheter, and the main cavity pipeline and the side cavity pipeline of the double-cavity central venous catheter can be simultaneously washed by using one injector, so that the washing is more labor-saving and convenient; keep the malleation state all the time through setting up pintle stopping mechanism 4 and can guarantee when dashing the sealed pipe, more accord with the requirement of central venous catheter towards the sealed pipe, prevent against current, the pre-filling has the flush fluid in the syringe body 1.

Referring to fig. 2 and 3, the pintle retaining mechanism 4 includes pintle ratchets 41 each disposed along a surface of the pintle 2. The syringe body 1 is provided with a non-return pawl 42 which can cooperate with the pintle ratchet 41. The needle plug ratchet 41 and the non-return pawl 42 are matched, so that the needle plug 2 can only slide in a single direction, a positive pressure state is always kept when the tube is sealed, the requirement of the central venous catheter on the tube is met, and backflow is prevented.

Example two:

referring to fig. 4, 5 and 6, on the basis of the first embodiment, a ring-shaped spacer 43 for separating the check pawl 42 from the pintle ratchet 41 is detachably arranged between the check pawl 42 and the pintle ratchet 41. The annular spacer 43 is arranged to separate the pintle ratchet 41 from the check pawl 42 to prevent the pintle 2 from being drawn out after misoperation to cause incapability of sucking liquid, and when the syringe is used, the annular spacer 43 is taken down after the syringe body 1 sucks and plays with flushing liquid medicine, and the check pawl 42 can be matched with the pintle ratchet 41 to prevent the pintle 2 from retreating.

Referring to fig. 5, a partition 5 is provided in the injector body 1. The partition 5 divides the interior of the injector body 1 into two separate injection chambers 11.

Referring to fig. 5, each nipple 3 is communicated with one injection cavity 11, and a pintle 2 matched with the nipple 11 is arranged in each injection cavity 11. Set up two injection chamber 11 and communicate two nipples 3 respectively for when pintle 2 feeds, both sides pressure keeps unanimous, prevents to lead to the whole opposite side nipple 3 that flow to of flush fluid because one side central venous catheter dashes to seal the pipe and blocks up, leads to the flushing effect not good.

Referring to fig. 5, a pin 6 for synchronously fixing all the pins 2 is detachably disposed between the pins 2. The arrangement of the plug 6 is convenient for binding the pintle 2, so that the pintle can be synchronously fed, and the main and side two-cavity pipelines of the central venous catheter can be simultaneously flushed. When only one side is needed to be washed, the bolt 6 is drawn out, and the corresponding side pintle 2 can move independently, so that the use is more convenient.

Referring to fig. 5, the partition 5 is integrally formed with the injector body 1.

Referring to fig. 4 and 5, the nipple 3 is sleeved with a coupling nut 7. One end of the connecting nut 7 close to the injector body 1 is rotatably connected with the nipple 3. The connecting nut 7 is arranged to be matched with the central venous catheter flushing and sealing pipe, and the screw heads corresponding to the connecting nut 7 can be arranged on the main and side two-cavity pipes of the central venous catheter, so that the central venous catheter flushing and sealing pipe is firmly and safely fixed by using threaded connection.

The utility model discloses the working process:

the utility model relates to a special two nipple syringes of pre-filled type two-chamber central venous catheter flush joint pipe is in the course of the work, two nipples 3 can be used for respectively with the owner of two-chamber central venous catheter, the two chamber pipe-line connection of side, the pre-filled flush fluid in syringe body 1, extrude the flush fluid pressurization through pintle 2, use an syringe can be simultaneously to the owner of two-chamber central venous catheter, the two chamber pipe-line of side washes simultaneously, pintle ratchet 41 and non return pawl 42 cooperation, make 2 only can one-way slip of pintle, keep the malleation state throughout when guaranteeing the flush joint pipe, more accord with the requirement of central venous catheter flush joint pipe, prevent against the current.

The above-mentioned embodiment is right the utility model discloses an explanation, it is not right the utility model discloses a limited, any right the scheme after the simple transform of the utility model all belongs to the protection scope of the utility model.

Claims (8)

1. The utility model provides a special double-nipple syringe of pre-filled formula two-chamber central venous catheter flushing-sealing pipe, includes syringe body (1) and locates in syringe body (1) and with syringe body (1) sliding connection's pintle (2), be equipped with on pintle (2) can with syringe body (1) complex piston (8), its characterized in that: keep away from on syringe body (1) the one end of pintle (2) be equipped with more than two with nipple (3) of syringe body (1) inside intercommunication, syringe body (1) with be equipped with between pintle (2) and be used for only allowing pintle (2) to nipple (3) end slides, prevents pintle stopping mechanism (4) that pintle (2) recedes.

2. The special double-nipple injector for the pre-filled double-cavity central venous catheter flushing and sealing tube of claim 1, wherein: the pintle stopping mechanism (4) comprises a plurality of pintle ratchets (41) which are paved along the surface of the pintle (2), and a non-return pawl (42) which can be matched with the pintle ratchets (41) is arranged in the injector body (1).

3. The double-nipple injector special for the pre-filled double-cavity central venous catheter flushing and sealing tube of claim 2, wherein: an annular spacer bush (43) used for separating the check pawl (42) from the pintle ratchet (41) is detachably arranged between the check pawl (42) and the pintle ratchet (41).

4. The special double-nipple injector for the pre-filled double-cavity central venous catheter flushing and sealing tube of claim 1, wherein: the injection syringe is characterized in that a partition plate (5) is arranged in the syringe body (1), and the inside of the syringe body (1) is divided into more than two independent injection cavities (11) by the partition plate (5).

5. The special double-nipple injector for the pre-filled double-cavity central venous catheter flushing and sealing tube of claim 4, wherein: each nipple (3) is respectively communicated with one injection cavity (11), and a pintle (2) matched with the nipple is arranged in each injection cavity (11).

6. The special double-nipple injector for the pre-filled double-cavity central venous catheter flushing and sealing tube of claim 5, wherein: the pin bolts (2) are detachably provided with a bolt (6) used for synchronously fixing all the pin bolts (2).

7. The special double-nipple injector for the pre-filled double-cavity central venous catheter flushing and sealing tube of claim 4, wherein: the clapboard (5) and the injector body (1) are integrally formed.

8. The special double-nipple injector for the pre-filled double-cavity central venous catheter flushing and sealing tube of claim 1, wherein: nipple (3) on the cover be equipped with coupling nut (7), coupling nut (7) are close to the one end of syringe body (1) with nipple (3) rotatable coupling.

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