CN114768081A

CN114768081A - Novel pre-filling catheter flusher

Info

Publication number: CN114768081A
Application number: CN202210344771.7A
Authority: CN
Inventors: 申莉莉; 汪春雨; 李寿伦; 李芳�; 袁一心
Original assignee: Individual
Current assignee: Chongqing University Cancer Hospital
Priority date: 2022-03-31
Filing date: 2022-03-31
Publication date: 2022-07-22
Anticipated expiration: 2042-03-31
Also published as: CN114768081B

Abstract

The invention discloses a novel pre-filling type catheter flusher, which comprises a liquid injection assembly, wherein the liquid injection assembly comprises a sleeve and a core rod in sliding fit with the sleeve, a piston assembly is arranged at one end of the core rod, which extends into the sleeve, an integrally formed liquid injection head is arranged at one end of the sleeve, which is far away from the core rod, and steps are fixedly connected to the outer side of the liquid injection head in the circumferential direction; the outer joint assembly comprises a flexible shell sleeved outside the step, a clamping ring is sleeved outside the flexible shell, and a plurality of air bags are mounted on the inner side wall of the clamping ring; the inner joint subassembly is including cup jointing the bushing in annotating the liquid head, and bushing's inside wall is fixed with a plurality of first elastic bulge, and bushing inboard is fixed with first bell pipe, the lateral wall butt of first elastic bulge and first bell pipe, and bushing keeps away from the one end of annotating the liquid head and is equipped with the second toper pipe. The invention improves the sealing performance of the liquid injection head and the external hose and ensures that the liquid injection head and the external hose can be quickly assembled and disassembled.

Description

Novel pre-filled catheter flusher

Technical Field

The invention relates to the technical field of medical instruments, in particular to a novel prefilled catheter flusher.

Background

The pre-filled catheter flusher is a novel tube sealing liquid and can replace the traditional tube sealing liquids such as normal saline and the like. The novel tube sealing liquid has wide application range, simple operation, small limitation and small influence on the state of an illness and physiological indexes of a patient. The pre-filled catheter flusher can complete the preparation of some medicines before infusion by one catheter, thereby reducing the consumption of heavy materials and facilitating the storage. The pollution chance can be reduced, the risk of infection is reduced, the security is high, the occurrence of puncture wound of medical personnel is avoided, and the operation time is also reduced.

When the pre-filled catheter flusher is used, a hose (catheter) is required to be externally connected, the medicament liquid is pushed into the hose through the pre-filled catheter flusher, a liquid injection head of the pre-filled catheter flusher is usually arranged to be of a screw structure, a pipeline connector is correspondingly arranged at the joint of the hose and the liquid injection head, the connection of the liquid injection head and the hose is realized through a threaded connection mode of the pipeline connector and the screw structure, but when the pre-filled catheter flusher is used, because the connection mode of the threaded connection has the problem of poor tightness, the medicament liquid is easy to leak, and the screw structure and the pipeline connector generally adopt disposable plastics as raw materials, because the disposable plastics are rough in processing technology, the processed threaded part has defects, the influence on the sealing performance is further increased, and at present, in order to avoid the problem, part of hospitals adopt a rigid pipeline connector made of stainless steel and a liquid injection head with a screw structure, although can improve sealing performance, because its material and processing technology are all more expensive, lead to use cost to be drawn high by a wide margin to this structure global design's precision is higher, and the structure is complicated, leads to annotating and can't realize quick installation and dismantlement work between liquid head and the external hose, has influenced work efficiency. Therefore, there is a need for a new pre-filled catheter flusher.

Disclosure of Invention

The invention aims to provide a novel pre-filling type catheter flusher, which is used for solving the problems in the prior art, improving the sealing performance of a liquid filling head and an external hose and ensuring that the liquid filling head and the external hose can be quickly installed and detached.

In order to achieve the purpose, the invention provides the following scheme: the invention provides a novel pre-filled catheter flusher, which comprises:

the liquid injection assembly comprises a sleeve and a core rod in sliding fit with the sleeve, a piston assembly is arranged at one end, extending into the sleeve, of the core rod, an integrally formed liquid injection head is arranged at one end, far away from the core rod, of the sleeve, and steps are fixedly connected to the outer side of the liquid injection head in the circumferential direction;

the outer joint assembly comprises a flexible shell sleeved outside the step, a clamping ring is sleeved outside the flexible shell, a plurality of air bags abutted against the flexible shell are mounted on the inner side wall of the clamping ring, and a plurality of clamp spring claws are circumferentially fixed at one end, far away from the sleeve, of the flexible shell;

the inner joint component comprises a flexible sleeve sleeved in the liquid injection head, the flexible sleeve is used for connecting the liquid injection head with a hose, the abutting head of the clamp spring claw abuts against the outer side wall of the flexible sleeve, a plurality of first elastic bulges are fixed on the inner side wall of the flexible sleeve in the circumferential direction, the first elastic bulge and the abutting joint are positioned on the same plane, a first conical pipe is fixed on the inner side of the flexible sleeve, the first elastic bulge is abutted against the outer side wall of the first conical pipe, one end of the flexible sleeve far away from the liquid injection head is provided with an integrally formed second conical pipe, the hose is worn to locate first toper pipe with between the second toper pipe, the hose stretches into the outside circumference of first toper pipe one end is fixed with the snap ring, the snap ring with the inside wall butt of first toper pipe.

Preferably, one end, close to the hose, of the flexible shell is provided with an opening, the clamp spring claws are fixedly connected to the outer edge of the opening, the end face, far away from one end of the hose, of the flexible shell is provided with a jack, the jack is located between the step and the sleeve, the inner side of the jack is abutted to the outer side of the liquid injection head, the end face, far away from one end of the hose, of the flexible shell is abutted to the end face, close to the sleeve, of the step, and the inner side of the flexible shell is abutted to the outer side of the liquid injection head.

Preferably, the annular cavity is arranged in the clamping ring, the annular cavity is communicated with a plurality of air inlet channels, the air inlet channels are communicated with the inner cavity of the air bag, the air bag is fixedly connected to the inner side wall of the clamping ring, an air inlet pipe is fixedly connected to the outer side of the clamping ring, and the air inlet pipe is communicated with the annular cavity.

Preferably, a tie is circumferentially tied to the outer side of the plurality of abutting heads.

Preferably, the flexible sleeve stretches into a plurality of second elastic bulges are fixed on the outer side of one end of the liquid injection head in the circumferential direction, a plurality of clamping grooves are formed in the inner side face of the liquid injection head in the circumferential direction, an adhesive layer is arranged in each clamping groove, and the second elastic bulges stretch into the clamping grooves and are fixedly connected with the adhesive layers.

Preferably, the inner diameters of the first conical pipe and the second conical pipe are gradually reduced along the direction far away from the liquid injection head.

Preferably, the piston assembly is including being fixed in the chock plug in the core bar outside, the lateral wall of chock plug with the laminating of telescopic inside wall, the chock plug is close to annotate the one end of liquid head and seted up a plurality of feed liquor holes, the feed liquor hole to the inside of chock plug extends, and the intercommunication has a collection liquid chamber, collection liquid chamber intercommunication has a plurality of liquid holes, it runs through to go out the liquid hole the chock plug is close to annotate the terminal surface of liquid head.

Preferably, a check valve is arranged in the liquid outlet hole and used for preventing liquid in the sleeve from entering the liquid collecting cavity through the liquid outlet hole.

The invention discloses the following technical effects: through the design of fixing the step at the outer side of the liquid injection head, the flexible shell is wrapped at the step, the clamping ring is sleeved at the outer side of the flexible shell, the air bag is attached to the surface of the step, after the air bag is inflated, the flexible shell can be tightly pressed at the step, the clamp spring claw is opened, when the flexible tube is externally connected, the flexible tube is firstly arranged in the flexible sleeve and is inwards inserted and connected along the direction from the first conical tube to the second conical tube until the elastic clamp ring is pressed to the tube opening of the first conical tube for limiting, the tube opening of the second conical tube is tightly attached to the flexible tube, then the flexible sleeve is inserted and connected in the liquid injection head, the clamp spring claw is loosened, the abutting head presses the flexible sleeve, the flexible sleeve is extruded and deformed, the diameter of the extruded and deformed section of the flexible clamp ring is reduced, the first elastic bulge is tightly pressed at the tube opening of the first conical tube, the elastic clamp ring is prevented from being separated from the tube opening of the first conical tube, and the sealing performance of the device is integrally improved, the connection steadiness of annotating the external hose of liquid head has been improved simultaneously, and has made installation and dismantlement work convenient, and this device after the assembly is accomplished directly promotes the core bar in the use for the core bar drives piston assembly and slides in the sleeve, can push into the medicament liquid to the hose. The invention improves the sealing performance of the liquid injection head and the external hose and ensures that the liquid injection head and the external hose can be quickly installed and disassembled.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required in the embodiments will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of the structure of the novel pre-filled catheter flusher of the present invention;

FIG. 2 is a partial enlarged view of A in FIG. 1;

FIG. 3 is a partial enlarged view of B in FIG. 1;

FIG. 4 is a partial enlarged view of C in FIG. 1;

FIG. 5 is an enlarged view of a portion D of FIG. 1;

wherein, 1 is the sleeve, 2 is the core bar, 3 is for annotating the liquid head, 4 is the step, 5 is the flexible shell, 6 is the grip ring, 7 is the gasbag, 8 is jump ring claw, 9 is the flexible sleeve, 10 is the hose, 11 is the butt head, 12 is first elastic bulge, 13 is first conical duct, 14 is the second conical duct, 15 is the snap ring, 16 is the jack, 17 is the annular chamber, 18 is the inlet channel, 19 is the intake pipe, 20 is the ribbon, 21 is the second elastic bulge, 22 is the draw-in groove, 23 is the viscose layer, 24 is the chock plug, 25 is the feed liquor hole, 26 is the collecting chamber, 27 is the liquid hole, 28 is the check valve.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

Referring to fig. 1 to 5, the present invention provides a novel prefilled catheter flusher, comprising:

the liquid injection assembly comprises a sleeve 1 and a core rod 2 in sliding fit with the sleeve 1, a piston assembly is arranged at one end, extending into the sleeve 1, of the core rod 2, an integrally formed liquid injection head 3 is arranged at one end, far away from the core rod 2, of the sleeve 1, the medicine liquid is input into the sleeve 1, the piston assembly is driven by pushing the core rod 2 to slide in the sleeve 1, the medicine liquid can be sent out from a liquid injection port 3, a step 4 is fixedly connected to the outer side of the liquid injection head 3 in the circumferential direction, and the step 4 is of an annular structure and is used for being connected with a flexible shell 5;

the external joint assembly comprises a flexible shell 5 sleeved outside a step 4, a clamping ring 6 is sleeved outside the flexible shell 5, a plurality of air bags 7 abutted to the flexible shell 5 are mounted on the inner side wall of the clamping ring 6, a plurality of clamp spring claws 8 are circumferentially fixed at one end, far away from the sleeve 1, of the flexible shell 5, the flexible shell 5 is coated outside the step 4, the clamping ring 6 is sleeved outside the flexible shell 5 and fixed with the flexible shell and the clamping ring, the clamp spring claws 8 are close to a flexible sleeve 9 in a gathering mode, and when the air bags 7 are inflated, the air bags 7 extrude the flexible shell 5, so that the flexible shell 5 is pressed on the step 4;

the inner joint component comprises a flexible sleeve 9 sleeved in the liquid injection head 3, the flexible sleeve 9 is used for connecting a hose 10 externally connected with the liquid injection head 3, a butt joint head 11 of a clamp spring claw 8 is abutted against the outer side wall of the flexible sleeve 9, a plurality of first elastic bulges 12 are circumferentially fixed on the inner side wall of the flexible sleeve 9, the first elastic bulges 12 and the butt joint head 11 are positioned on the same plane, a first conical pipe 13 is fixed on the inner side of the flexible sleeve 9, the first elastic bulges 12 are abutted against the outer side wall of the first conical pipe 13, when the clamp spring claw 8 is tightly pressed on the outer surface of the flexible sleeve 9, the butt joint head 11 extrudes and deforms a corresponding section of the flexible sleeve 9 to drive the first elastic bulges 12 to extrude towards the first conical pipe 13, the pipe orifice of the first conical pipe 13 is reduced, so that the elastic clamp ring 15 can be prevented from escaping from the first conical pipe 13, one end of the flexible sleeve 9, which is far away from the liquid injection head 3, is provided with an integrally formed second conical pipe 14, the hose 10 wears to locate between first conical duct 13 and the second conical duct 14, the internal diameter of first conical duct 13 and second conical duct 14 is all along keeping away from the direction convergent of notes liquid head 3, first conical duct 13 and second conical duct 14 are rubber tubular product, the orificial internal diameter of second conical duct 14 is less than the external diameter of hose 10, make the hose 10 extruded after passing the 14 mouths of second conical duct, the outer wall of hose 10 closely laminates with the 14 mouths of second conical duct, hose 10 stretches into the outside circumference of first conical duct 13 one end and is fixed with resilient clip 15, resilient clip 15 and the inside wall butt of first conical duct 13.

Through the design of fixing the step 4 at the outer side of the liquid injection head 3, the flexible shell 5 is wrapped at the step 4, the clamping ring 6 is sleeved at the outer side of the flexible shell 5, the air bag 7 is attached to the surface of the step 4, the flexible shell 5 can be tightly pressed at the step 4 after the air bag 4 is inflated, the clamp spring claws 8 are opened, when the hose 10 is externally connected, the hose 10 is firstly arranged in the flexible sleeve 9 and is inwards inserted and connected along the direction from the first conical pipe 13 to the second conical pipe 14 until the elastic clamp ring 15 is pressed to the pipe orifice of the first conical pipe 13 for limiting, the pipe orifice of the second conical pipe 14 is tightly attached to the hose 10, then the flexible sleeve 9 is inserted and connected into the liquid injection head 3, the clamp spring claws 8 are released, the abutting head 11 presses the flexible sleeve 9, the flexible sleeve 9 is extruded and deformed, and the section of the extruded and deformed is positioned, so that the first elastic bulge 12 tightly presses the pipe orifice of the first conical pipe 13, prevent that snap ring 15 from deviating from the mouth of pipe of first conical duct 13, this device after the assembly directly promotes core bar 2 in the use for core bar 2 drives piston assembly and slides in sleeve 1, can push into the medicament liquid to hose 10. The device ensures that the liquid injection head 3 and the external hose 10 can be quickly installed and detached while improving the sealing performance of the liquid injection head 3 and the external hose 10.

Further optimize the scheme, the one end that flexible shell 5 is close to hose 10 sets up to the opening, 8 rigid couplings of jump spring claw are in open-ended periphery department, make jump spring claw 8 be fixed in on the flexible shell 5, flexible shell 5 keeps away from the terminal surface of hose 10 one end and has seted up jack 16, jack 16 is located between step 4 and the sleeve 1, the inboard of jack 16 and the outside butt of annotating liquid head 3, the terminal surface that flexible shell 5 kept away from hose 10 one end is close to sleeve 1's terminal surface butt with step 4, the inboard of flexible shell 5 and the outside butt of annotating liquid head 3, the inner wall of flexible shell 5 with and the terminal surface that is close to sleeve 1 one side all closely laminate with step 4.

Further optimize the scheme, annular chamber 17 is equipped with in the grip ring 6, annular chamber 17 intercommunication has a plurality of inlet channel 18, inlet channel 18 and gasbag 7's inner chamber intercommunication, gasbag 7 rigid coupling in the inside wall of grip ring 6, the outside rigid coupling of grip ring 6 has intake pipe 19, intake pipe 19 and annular chamber 17 intercommunication, ventilate in to intake pipe 19 with instruments such as the inflating pipe, make the air current enter into respectively to each inlet channel 18 through annular chamber 17, it is full of each gasbag 7 that will correspond, then seal intake pipe 19.

Further optimize the scheme, the outside circumference ligature of a plurality of butt heads 11 has ribbon 20, compresses tightly the back under 8 squeezing actions of jump ring claw with between first elastic bulge 12 and the first toper pipe 13, for the steadiness of guaranteeing its position connection, and ribbon 20 that adopts disposable ligature usefulness encircles a week and fixes the position ligature of a plurality of butt heads 11, prevents that it from appearing shifting.

Further optimize the scheme, the outside circumference that flexible sleeve 9 stretched into annotates liquid head 3 one end is fixed with a plurality of second elastic bulge 21, a plurality of draw-in grooves 22 have been seted up to the medial surface circumference of annotating liquid head 3, be equipped with viscose layer 23 in the draw-in groove 22, second elastic bulge 21 stretches into in the draw-in groove 22 and with viscose layer 23 rigid coupling, insert flexible sleeve 9 one end to annotate in the liquid head 3, make second elastic bulge 21 aim at with annotating the draw-in groove 22 of liquid head 3 inboard, in advance at draw-in groove 22 spraying viscose layer 23, fasten through viscose layer 23 behind the second elastic bulge 21 buckle draw-in groove 22, on the one hand, the connection steadiness has been improved, on the other hand, the leakproofness when leading to liquid has been improved.

Further optimizing the scheme, the piston assembly includes the chock plug 24 that is fixed in the core bar 2 outside, the lateral wall of chock plug 24 and the inside wall laminating of sleeve 1, the one end that the chock plug 24 is close to annotating liquid head 3 has seted up a plurality of feed liquor holes 25, feed liquor hole 25 extends to the inside of chock plug 24, and communicate and be connected with collecting liquid chamber 26, collecting liquid chamber 26 communicates has a plurality of liquid holes 27, liquid hole 27 runs through the terminal surface that the chock plug 24 is close to annotating liquid head 3, be equipped with check valve 28 in the liquid hole 27, check valve 28 is used for stopping the liquid in the sleeve 1 to pass through liquid hole 27 and gets into collecting liquid chamber 26, because the outer joint subassembly and the inner joint subassembly of front end do not have the more stable that expensive stainless steel connector is connected, consequently need slow down the velocity of flow of medicament liquid slightly in the use, when chock plug 24 promoted medicament liquid to flow, because a plurality of feed liquor holes 25 have been designed, some medicament liquid enters into collecting liquid chamber 26 through feed liquor hole 25, and one part of the liquid flows back through the liquid inlet hole 25, and the other part of the liquid flows back through the liquid outlet hole 27, so that a part of medicament liquid is temporarily stored in the liquid collecting cavity 26 during liquid pushing each time, the impact force on the front end is reduced, and the front-end assembled external joint assembly and internal joint assembly are prevented from being damaged by the impact force.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

The above-described embodiments are only intended to illustrate the preferred embodiments of the present invention, and not to limit the scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A novel prefilled catheter flusher, comprising:

the liquid injection assembly comprises a sleeve (1) and a core rod (2) in sliding fit with the sleeve (1), a piston assembly is arranged at one end, extending into the sleeve (1), of the core rod (2), an integrally formed liquid injection head (3) is arranged at one end, far away from the core rod (2), of the sleeve (1), and a step (4) is fixedly connected to the outer side of the liquid injection head (3) in the circumferential direction;

the outer joint assembly comprises a flexible shell (5) sleeved on the outer side of the step (4), a clamping ring (6) is sleeved on the outer side of the flexible shell (5), a plurality of air bags (7) abutted to the flexible shell (5) are mounted on the inner side wall of the clamping ring (6), and a plurality of clamp spring claws (8) are circumferentially fixed at one end, far away from the sleeve (1), of the flexible shell (5);

the inner joint component comprises a flexible sleeve (9) sleeved in the liquid injection head (3), the flexible sleeve (9) is used for abutting against an external hose (10) of the liquid injection head (3), an abutting head (11) of a clamp spring claw (8) and the outer side wall of the flexible sleeve (9) in an abutting mode, a plurality of first elastic bulges (12) are fixed on the inner side wall of the flexible sleeve (9) in the circumferential direction, the first elastic bulges (12) and the abutting head (11) are located on the same plane, a first conical pipe (13) is fixed on the inner side of the flexible sleeve (9), the first elastic bulges (12) and the outer side wall of the first conical pipe (13) in an abutting mode, one end, far away from the liquid injection head (3), of the flexible sleeve (9) is provided with an integrally formed second conical pipe (14), and the hose (10) penetrates through the first conical pipe (13) and the second conical pipe (14), hose (10) stretch into outside circumference of first toper pipe (13) one end is fixed with snap ring (15), snap ring (15) with the inside wall butt of first toper pipe (13).

2. The novel prefilled catheter flusher of claim 1, wherein: flexible shell (5) are close to the one end of hose (10) sets up to the opening, jump ring claw (8) rigid coupling in open-ended outer fringe department, keep away from flexible shell (5) jack (16) have been seted up to the terminal surface of hose (10) one end, jack (16) are located step (4) with between sleeve (1), the inboard of jack (16) with annotate the outside butt of liquid head (3), keep away from flexible shell (5) the terminal surface of hose (10) one end with step (4) are close to the terminal surface butt of sleeve (1), the inboard of flexible shell (5) with annotate the outside butt of liquid head (3).

3. The novel prefilled catheter flusher of claim 1, wherein: have annular chamber (17) in grip ring (6), annular chamber (17) intercommunication has a plurality of inlet channel (18), inlet channel (18) with the inner chamber intercommunication of gasbag (7), gasbag (7) rigid coupling in the inside wall of grip ring (6), the outside rigid coupling of grip ring (6) has intake pipe (19), intake pipe (19) with annular chamber (17) intercommunication.

4. The novel prefilled catheter flusher of claim 1, wherein: the outer sides of the abutting heads (11) are circumferentially bound with binding bands (20).

5. The novel prefilled catheter flusher of claim 1, wherein: flexible sleeve (9) stretch into the outside circumference of annotating liquid head (3) one end is fixed with a plurality of second elastic bulge (21), a plurality of draw-in grooves (22) have been seted up to the medial surface circumference of annotating liquid head (3), be equipped with viscose layer (23) in draw-in groove (22), second elastic bulge (21) stretch into in draw-in groove (22) and with viscose layer (23) rigid coupling.

6. The novel prefilled catheter flusher of claim 1, wherein: the inner diameters of the first conical pipe (13) and the second conical pipe (14) are gradually reduced along the direction far away from the liquid injection head (3).

7. The novel prefilled catheter flusher of claim 1, wherein: piston assembly is including being fixed in stopper (24) in core bar (2) outside, the lateral wall of stopper (24) with the inside wall laminating of sleeve (1), stopper (24) are close to a plurality of feed liquor holes (25) have been seted up to the one end of annotating liquid head (3), feed liquor hole (25) to the inside of stopper (24) extends, and the intercommunication has a liquid collecting cavity (26), liquid collecting cavity (26) intercommunication has a plurality of liquid holes (27), run through liquid hole (27) stopper (24) are close to the terminal surface of annotating liquid head (3).

8. The novel prefilled catheter flusher of claim 7, wherein: be equipped with check valve (28) in liquid hole (27), check valve (28) are used for blockking liquid in sleeve (1) passes through liquid hole (27) gets into in the liquid collecting cavity (26).