CN111570427A

CN111570427A - Preassembled medical flusher and assembling and flushing method thereof

Info

Publication number: CN111570427A
Application number: CN202010445241.2A
Authority: CN
Inventors: 郑伟哲
Original assignee: Jiangshan Fafa Technology Co ltd
Current assignee: Jiangshan Fafa Technology Co ltd
Priority date: 2020-05-24
Filing date: 2020-05-24
Publication date: 2020-08-25

Abstract

The invention relates to a pre-installed medical flusher, which comprises an injection tube, a push plug and a push rod, wherein oil cleaning liquid is stored in the injection tube, a liquid outlet nozzle of the injection tube is connected with a liquid spraying needle, a sealing gasket connecting rod is connected to the injection tube, the sealing gasket connecting rod is connected with a sealing gasket, the liquid spraying needle comprises a first section and a second section, the liquid outlet nozzle is provided with a sliding column section, one end of the first section is provided with a sliding sleeve which is connected with the sliding column section in a sealing and sliding mode, the other end of the first section is connected with one end of the second section, a broken line structure is formed between the first section and the second section, when the sliding sleeve slides to one end, connected with the injection tube, of the sliding column section, the sealing gasket abuts against the other end of the second section to seal an outlet of the. The invention has the advantage of no need of field assembly, and solves the problem that the existing flusher is easy to generate and does not conform to aseptic operation specifications due to the fact that the spray needle needs to be replaced on the field.

Description

Preassembled medical flusher and assembling and flushing method thereof

Technical Field

The invention relates to medical equipment, in particular to a pre-assembled medical flusher and an assembling and flushing method thereof.

Background

In order to prevent incompatibility and liquid medicine residue in the catheter from stimulating local blood vessels when different medicines are injected through the same catheter, the catheter needs to be flushed. The existing method of flushing the catheter is to open a whole pack of saline and then draw a portion through a syringe and then inject the saline into the catheter. Therefore, the existing catheter is flushed by a normal saline mode through a syringe, and the following defects exist: the normal saline is required to be pumped firstly and then the flushing can be carried out, so the time required for flushing operation is long; the amount of the physiological saline required by flushing is 3-10 ml, and even the physiological saline in the smallest bag is opened for flushing, the amount of the physiological saline is 250 mm, so that the waste of the physiological saline is large, and the economic burden of a patient is increased; in order to solve the above problems, a flusher disclosed in the patent document with chinese patent No. 201811584427.5 is designed, which dissipates heat and prefabricates physiological saline (cleaning solution) to save the physiological saline, but needs to take off the plug and replace the liquid spraying needle in the using process, which not only increases the labor capacity of medical staff, but also is easy to be generated when the aseptic operation standard is not met; in addition, the push rod and the injection cylinder of the existing flusher can only be connected in series in a circumferential distribution mode, so that the flusher is easy to break due to overlong appearance length and the phenomenon of leakage of the physiological saline due to inward movement of the push rod caused by easy pressing of the push rod is caused.

Disclosure of Invention

The invention provides a preassembled medical flusher without assembling a liquid spraying needle head on site, which solves the problem that the existing flusher is easy to generate and not conform to aseptic operation specifications due to the fact that the liquid spraying needle needs to be replaced on site.

The second object of the present invention is to further provide a pre-assembled medical syringe with a push rod capable of being folded onto the periphery of an injection cylinder, which solves the problem that the push rod and the injection cylinder of the prior pre-assembled syringe can only be connected in series, which is easy to break and is pressed to cause leakage.

The technical problem is solved by the following technical scheme: a pre-installed medical flusher comprises an injection tube, wherein a push plug is connected in the injection tube in a sealing and sliding manner, a push rod is connected on the push plug, a cleaning fluid storage cavity is separated in the injection tube by the push plug, a liquid outlet nozzle is arranged at one end, far away from the push plug, of the cleaning fluid storage cavity, cleaning fluid is filled in the cleaning fluid storage cavity, the liquid outlet nozzle is connected with a liquid injection needle, a sealing gasket connecting rod is connected on the injection tube, a sealing gasket is connected at one end, far away from the injection tube, of the sealing gasket connecting rod, the liquid injection needle comprises a first section and a second section, the liquid outlet nozzle is provided with a sliding column section protruding out of the end face of the injection tube and extending along the extension direction of the injection tube, one end of the first section is provided with a sliding sleeve, the other end of the first section is connected, when the sliding sleeve slides to one end of the sliding column section connected with the injection tube, the sealing gasket abuts against the other end of the second section to seal the outlet of the injection needle, and when the sliding sleeve slides to one end of the sliding column section far away from the injection tube, the sealing gasket is staggered with the outlet of the injection needle. When the cleaning device is used for cleaning, the liquid injection needle is pulled towards the direction far away from the injection tube, so that the sliding sleeve slides on the sliding column section, the sealing gasket loses the sealing effect on the outlet of the liquid injection needle, and then the push rod is pressed to drive the push plug to spray the physiological saline from the liquid injection needle so as to realize cleaning. The liquid spraying needle is prefabricated, and the liquid spraying needle is not required to be mounted after the liquid spraying needle is detached from the liquid outlet nozzle in use, so that the working procedures are saved, and the operation which is not in accordance with the sterile operation standard is not easy to generate if the working procedures are less. The liquid spraying needle is set to be of a curve structure, when the human body sprays water, the eye can be conveniently sprayed, and only the liquid spraying needle can be opened, so that the human body is not easy to fear.

Preferably, the angle between the first and second sections is greater than 125 ° and less than 155 °. This angle is convenient when spraying.

Preferably, one end of the sealing gasket connecting rod, which is far away from the injection cylinder, is provided with a through groove extending along the extending direction of the sliding column, and the sealing gasket is connected to the bottom wall of the through groove. The liquid spraying needle can be prevented from being staggered with the sealing pad when being collided to lose the sealing effect, and the reliability in sealing is good.

Preferably, the gasket is provided with a sealing surface for sealing the outlet of the liquid injection needle, and the sealing surface is an inclined surface with one end far away from the injection tube inclining towards the direction far away from the liquid injection needle. The phenomenon that the sealing cannot be carried out due to manufacturing errors can be avoided.

Preferably, the sealing gasket connecting rod is hinged with the injection tube through a connecting rod part hinge shaft, an injection tube part limiting block is arranged on the injection tube, and when the sealing gasket connecting rod is abutted with the injection tube part limiting block, the injection needle can move to be sealed by the sealing gasket. The liquid injection needle can be reliably sealed, and the sealing gasket connecting rod can be folded and avoided when sealing is not needed.

Preferably, the hinge shaft of the connecting rod part is perpendicular to a plane defined by the liquid spraying needle and the connecting rod of the sealing gasket, and the connecting rod of the sealing gasket is connected with the connecting rod dumping spring which drives the connecting rod of the sealing gasket to rotate towards the liquid spraying needle. After the liquid spraying needle is far away from the injection tube and is staggered with the sealing pad, the connecting rod of the sealing pad actively dumps to the liquid spraying needle to avoid, and the liquid spraying needle is supported.

Preferably, the push rod comprises two half parts distributed along the radial direction of the injection cylinder, the half parts are hinged with the push plug through a hinge structure, the hinge structure comprises a push rod part hinge shaft, a piston part connecting lug connected to the piston and a push rod part connecting lug connected to the half parts, the piston part connecting lug and the push rod part connecting lug are rotatably connected together through the push rod part hinge shaft, and the half parts can rotate to be folded on the outer peripheral surface of the injection cylinder by taking the push rod part hinge shaft as a shaft; when the half parts rotate to be folded on the peripheral surface of the injection cylinder by taking the push rod part hinge shaft as a shaft, the push rod part connecting lug is hooked on the end surface of the injection cylinder. In the storage and transportation process, the push rod is in a state of being folded to the outside of the injection cylinder, so that the push rod and the injection cylinder are in a parallel state, the length can be reduced, the structure is more compact, and the phenomenon that the push plug pushes out the physiological saline by mistake due to touching the push rod can not be generated. The second object of the invention is achieved.

Preferably, two protection blocks are arranged at one end of the half part away from the hinge structure, and when the half part is folded on the outer peripheral surface of the injection cylinder, the two protection blocks on the two half parts are abutted together in a one-to-one correspondence manner to form a protection ring sleeved outside the injection cylinder. The push rod can play and push away the effect that a section of thick bamboo of moulding plastics protected.

Preferably, the guard ring is a circular ring. The structure is compact and good.

Preferably, the surfaces of the two sides of the half part perpendicular to the hinge shaft direction of the push rod part are cambered surfaces, and when the half part is folded on the injection molding cylinder, the injection molding cylinder is arranged in the half part in a penetrating manner. The protection to the section of thick bamboo of moulding plastics can be realized with compact overall arrangement, and the radian length of the part that the section of thick bamboo of moulding plastics was protected is certain, and the outward appearance volume can be less.

Preferably, when the half part rotates to be distributed with the push plug along the axial direction of the injection molding cylinder and is inserted into the injection molding cylinder, contact preventing gaps are arranged between the two circumferential ends of the half part and the injection molding cylinder, and the contact preventing gaps are smaller than 2 mm. Can realize the angle maximize that shelters from when the push rod parcel is on a section of thick bamboo of moulding plastics under the prerequisite of guaranteeing that the push rod can insert in the section of thick bamboo of moulding plastics.

Preferably, the push plug is provided with a push plug part limiting surface, the end surface of one end of the half part connected with the hinge structure is provided with a push rod part limiting surface, and when the half part rotates to abut against the push plug part limiting surface and the push rod part limiting surface, the extending direction of the push rod is parallel to the axis of the push plug. The push rod can be conveniently perpendicular to the push plug, so that the push is labor-saving.

Preferably, when the half parts rotate until the plug part limiting surface and the push rod part limiting surface abut together, the two half parts are in line contact and abut together. The stability in pushing can be improved.

An avoidance inclined surface is arranged between the end surface of one end of the half part connected with the hinge structure and the circumferential surface of the half part, and the avoidance inclined surface is used for preventing the two half parts from being abutted and abutted together when the half part is rotated and preventing the half part from rotating to be abutted and abutted with the push plug. The reliability in operation can be improved.

The invention also provides an assembly flushing method of the pre-assembled medical flusher, which is characterized by comprising the following steps of firstly, connecting the sliding sleeve to the sliding column and enabling the sliding sleeve to be positioned at one end of the sliding column far away from the injection tube, and enabling the push plug to move to one end of the injection tube provided with the liquid outlet nozzle; secondly, inserting the second section into the physiological saline; thirdly, the push rod is pulled towards the direction far away from the liquid outlet nozzle to drive the piston to move in the injection cylinder so that the physiological saline enters the cleaning liquid storage cavity; fourthly, the sliding sleeve moves towards the injection tube to seal the sealing gasket on the outlet of the liquid injection needle; and fifthly, pulling the liquid spraying needle towards the direction far away from the injection cylinder during cleaning to enable the outlet of the liquid spraying needle to be staggered with the sealing pad, then pushing the push rod inwards, and driving the piston by the push rod to spray the physiological saline in the cleaning liquid storage cavity out of the outlet of the liquid spraying needle.

The invention has the following advantages: the liquid injection needle is preassembled, so that the use is convenient, the workload of medical staff is reduced, and the phenomenon that the liquid injection needle does not conform to aseptic operation standards is not easy to generate; the sealing gasket is designed to seal the liquid spraying needle on the preassembly, so that the leakage phenomenon can be avoided, and the needle head is not easy to damage; the push rod can be folded to the parcel in the radial both sides of a section of thick bamboo of moulding plastics, has not only shortened the length of prefabricated formula flusher and the push rod can play and carry out the effect of protecting to the injection tube, the push rod warp and does not influence the use, and a section of thick bamboo damage of moulding plastics warp then can lead to the push plug can not remove and influence the use, because the push rod is foldable to carry out the storage, the volume of moving inwards of push rod when following the push plug axial extrusion push rod this moment is few to make normal saline be difficult to produce the leakage.

Drawings

FIG. 1 is a schematic view of the present invention as the ram is wrapped onto the barrel;

FIG. 2 is an enlarged partial schematic view of FIG. 1;

FIG. 3 is a left side schematic view of FIG. 1;

FIG. 4 is a schematic view of the present invention with the ram rotated in vertical preparation for pushing the ram;

fig. 5 is a left side view of fig. 4.

In the figure: the injection device comprises an injection cylinder 1, a push plug 2, a cleaning liquid storage cavity 3, a liquid outlet nozzle 4, a liquid spraying needle 5, a sealing gasket connecting rod 6, a sealing gasket 7, a first section 8, a second section 9, a sliding column section 10, a sliding sleeve 11, a through groove 12, a sealing surface 13, a connecting rod part hinge shaft 14, an injection cylinder part limiting block 15, a connecting rod dumping spring 16, a half part 17, a push rod part hinge shaft 18, a piston part connecting lug 19, a push rod part connecting lug 20, an end surface 21 of the injection cylinder, a protection block 22, a protection ring 23, a contact-preventing gap 24, a push rod part limiting surface 25 and an avoidance inclined surface 26.

Detailed Description

The invention is further described with reference to the following figures and examples.

Referring to fig. 1 to 5, a pre-filled medical syringe comprises a syringe barrel 1. The inside of the injection tube is hermetically and slidably connected with a push plug 2. The push plug is connected with a push rod, and the push plug separates a cleaning fluid storage cavity 3 in the injection tube. And a liquid outlet nozzle 4 is arranged at one end of the cleaning liquid storage cavity far away from the push plug. The cleaning liquid storage cavity is filled with cleaning liquid which is physiological saline. The liquid outlet nozzle is connected with a liquid spraying needle 5. The injection tube is connected with a sealing gasket connecting rod 6. One end of the sealing gasket connecting rod far away from the injection tube is connected with a sealing gasket 7. The liquid spray needle comprises a first section 8 and a second section 9. The liquid outlet nozzle is provided with a sliding column section 10 which protrudes out of the end surface of the injection tube and extends along the extension direction of the injection tube. One end of the first section is provided with a sliding sleeve 11, and the other end is connected with one end of the second section. The first section and the second section form a fold line structure. The included angle between the first and second segments is greater than 125 ° and less than 155 °. The sliding sleeve is connected on the sliding column section in a sealing and sliding manner. When the sliding sleeve slides to one end of the sliding column section connected with the injection tube (namely, in the state of figure 1), the sealing gasket is abutted against the other end of the second section to seal the outlet of the injection needle, and when the sliding sleeve slides to one end of the sliding column section far away from the injection tube (namely, in the state of figure 5), the sealing gasket is staggered with the outlet of the injection needle. One end of the sealing gasket connecting rod far away from the injection cylinder is provided with a through groove 12 extending along the extending direction of the sliding column. The sealing gasket is connected to the bottom wall of the through groove. The gasket is provided with a sealing surface 13 which seals the outlet of the liquid spray needle. The sealing surface is an inclined plane which is far away from one end of the injection tube and inclines towards the direction far away from the liquid injection needle. The gasket connecting rod is hinged with the injection cylinder through a connecting rod part hinge shaft 14. An injection cylinder part limiting block 15 is arranged on the injection cylinder. When the sealing gasket connecting rod and the limiting block of the injection cylinder part abut together, the liquid spraying needle can move to be sealed by the sealing gasket (namely the state of figure 1). The hinge shaft of the connecting rod part is vertical to a plane defined by the liquid spraying needle and the connecting rod of the sealing pad. The gasket connecting rod is connected to a connecting rod dumping spring 16 that drives the gasket connecting rod to rotate toward the liquid injection needle. When the liquid spraying needle is far away from the injection tube to move and is staggered with the sealing gasket, the sealing gasket connecting rod is abutted with the liquid spraying needle under the action of the connecting rod driving spring, the sealing gasket connecting rod can play a role in assisting the liquid spraying needle to be far away from the injection tube when being abutted on the second section, so that labor is saved when the liquid spraying needle is moved, and the sealing gasket connecting rod stops further toppling when being toppled to the abutting part of the first section and the second section. The plunger comprises two halves 17 extending radially of the barrel, the halves being hinged to the plunger by a hinge. The hinge structure includes a push rod part hinge shaft 18, a piston part coupling lug 19 coupled to the piston, and a push rod part coupling lug 20 coupled to the half parts. The piston part connecting lug and the push rod part connecting lug are rotatably connected together through a push rod part hinge shaft. In the process of storage and transportation, the half parts rotate to be folded on the outer peripheral surface of the injection tube by taking the push rod part hinge shaft as a shaft, and at the moment, the push rod part connecting lug is hooked on the end surface 21 of the injection tube, so that the push plug cannot be pushed towards the section where the liquid injection needle is located. The surfaces of two sides of the half part perpendicular to the direction of the hinge shaft of the push rod part are cambered surfaces, and when the half part is folded on the injection molding cylinder, the injection molding cylinder is arranged in the half part in a penetrating way. The end of the half remote from the hinge is provided with two guard blocks 22. When the half parts are folded on the peripheral surface of the injection cylinder (namely, in the state of figure 1), the two protection blocks on the two half parts are butted together in a one-to-one correspondence manner to form a protection ring 23 sleeved outside the injection cylinder. The protective ring is a circular ring. When the half part rotates to be distributed with the push plug along the axial direction of the injection molding cylinder and is inserted into the injection molding cylinder, the two circumferential ends of the half part and the injection molding cylinder are provided with anti-contact gaps 24. The contact prevention gap is less than 2 mm. The push plug is provided with a push plug part limiting surface. And a push rod part limiting surface 25 is arranged on the end surface of one end of the half part connected with the hinge structure. When the half parts rotate to the limit surface of the push plug part and the limit surface of the push rod part are abutted together, the extending direction of the push rod is parallel to the axis of the push plug, and the two half parts are in line contact and abutted together. An avoiding inclined surface 26 is arranged between the end surface of one end of the half part connected with the hinge structure and the circumferential surface of the half part, and is used for preventing the two half parts from being abutted and abutted together when the half part is rotated so as to prevent the half part from rotating to be abutted and abutted together with the push plug.

Claims

1. A pre-installed medical flusher comprises an injection tube, wherein a push plug is connected in the injection tube in a sealing and sliding manner, a push rod is connected on the push plug, a cleaning liquid storage cavity is separated in the injection tube by the push plug, a liquid outlet nozzle is arranged at one end, far away from the push plug, of the cleaning liquid storage cavity, cleaning liquid is filled in the cleaning liquid storage cavity, the pre-installed medical flusher is characterized in that the liquid outlet nozzle is connected with a liquid injection needle, a sealing gasket connecting rod is connected on the injection tube, a sealing gasket is connected at one end, far away from the injection tube, of the sealing gasket connecting rod, the liquid injection needle comprises a first section and a second section, the liquid outlet nozzle is provided with a sliding column section protruding out of the injection tube and extending along the extension direction of the injection tube, one end of the first section is provided with a sliding sleeve, the other end of the first, when the sliding sleeve slides to one end of the sliding column section connected with the injection tube, the sealing gasket abuts against the other end of the second section to seal the outlet of the injection needle, and when the sliding sleeve slides to one end of the sliding column section far away from the injection tube, the sealing gasket is staggered with the outlet of the injection needle.

2. The prefilled medical syringe of claim 1, wherein a through slot extending in the direction of extension of the sliding post is provided at the end of said gasket connecting rod remote from the barrel, and said gasket is connected to the bottom wall of said through slot.

3. The preloaded medical flusher of claim 1, wherein said gasket is provided with a sealing surface for sealing the outlet of the liquid injection needle, said sealing surface being a bevel sloping away from the end of the cartridge towards the direction away from the liquid injection needle.

4. The pre-assembled medical syringe as set forth in claim 1, wherein the plunger comprises two halves extending in a radial direction of the syringe, the halves being hinged to the plunger by a hinge structure, the hinge structure comprising a plunger hinge shaft, a piston engaging lug connected to the piston, and a plunger engaging lug connected to the halves, the piston engaging lug and the plunger engaging lug being rotatably connected by the plunger hinge shaft, the halves being rotatable about the plunger hinge shaft to be folded around the outer circumferential surface of the syringe.

5. The pre-assembled medical syringe according to claim 4, wherein the half parts are provided with two shielding blocks at the ends thereof away from the hinge structure, and when the half parts are folded on the outer peripheral surface of the syringe barrel, the two shielding blocks on the two half parts are abutted together in a one-to-one correspondence manner to form a shielding ring sleeved outside the syringe barrel; when the half parts rotate to be folded on the peripheral surface of the injection cylinder by taking the push rod part hinge shaft as a shaft, the push rod part connecting lug is hooked on the end surface of the injection cylinder.

6. The preloaded medical flusher of claim 5, wherein the two side surfaces of the half-parts perpendicular to the hinge axis of the push rod part are both cambered surfaces, and the half-parts are inserted into the half-parts when the half-parts are folded on the injection cylinder.

7. The preloaded medical flusher of claim 6, wherein when said half-portions are rotated to be axially displaced with the plunger and inserted into the barrel, there is a contact preventing gap between both circumferential ends of said half-portions and the barrel, said gap being less than 2 mm.

8. The pre-assembled medical irrigator according to claim 6, wherein the plunger is provided with a plunger portion limiting surface, the end surface of the half portion connected to the hinge structure is provided with a plunger portion limiting surface, and when the half portion is rotated until the plunger portion limiting surface abuts against the plunger portion limiting surface, the extension direction of the plunger is parallel to the axis of the plunger.

9. The preloaded medical flusher of claim 6, wherein said halves rotate until said plunger portion limiting surface abuts said plunger portion limiting surface, said halves line contact each other.

10. The assembling and flushing method of the pre-installed medical flusher is characterized by comprising the following steps of firstly, connecting a sliding sleeve to a sliding column at one end of the sliding column far away from a syringe and moving a push plug to one end of the syringe, wherein the end of the syringe is provided with a liquid outlet; secondly, inserting the second section into the physiological saline; thirdly, the push rod is pulled towards the direction far away from the liquid outlet nozzle to drive the piston to move in the injection cylinder so that the physiological saline enters the cleaning liquid storage cavity; fourthly, the sliding sleeve moves towards the injection tube to seal the sealing gasket on the outlet of the liquid injection needle; and fifthly, pulling the liquid spraying needle towards the direction far away from the injection cylinder during cleaning to enable the outlet of the liquid spraying needle to be staggered with the sealing pad, then pushing the push rod inwards, and driving the piston by the push rod to spray the physiological saline in the cleaning liquid storage cavity out of the outlet of the liquid spraying needle.