CN217014941U

CN217014941U - Injector for double-head venous catheter

Info

Publication number: CN217014941U
Application number: CN202121927809.0U
Authority: CN
Inventors: 范莺莺; 谢宝鲜
Original assignee: HANGZHOU CANCER HOSPITAL
Current assignee: HANGZHOU CANCER HOSPITAL
Priority date: 2021-08-17
Filing date: 2021-08-17
Publication date: 2022-07-22
Anticipated expiration: 2031-08-17

Abstract

The utility model provides an injector for a double-ended intravenous catheter, and belongs to the technical field of medical instruments. It has solved the current clean degree low scheduling problem of technology washing. This an injector for double-end ductus venosus includes belt cleaning device and interfacing apparatus, and belt cleaning device includes empty section of thick bamboo, piston and piston handle, and an empty section of thick bamboo is used for holding the washing liquid, and the piston handle is used for supplying people's push-and-pull to make the piston along empty section of thick bamboo length direction round trip movement in an empty section of thick bamboo, and the piston passes through the piston rod to be connected with the piston handle, and empty bobbin base portion is provided with two liquid mouths, and interfacing apparatus is used for connecting liquid mouth and the dark ductus venosus of double-end, and interfacing apparatus includes two washing syringe needles. The utility model has the advantages of high washing cleanness and the like.

Description

Injector for double-head venous catheter

Technical Field

The utility model belongs to the technical field of medical instruments, and particularly relates to an injector for a double-ended intravenous catheter.

Background

The heparin cap imitates the effect of the Rieful principle on the tube sealing of the venous indwelling needle, is generally matched with the long-term intravascular indwelling catheter (such as the venous indwelling needle and a central venous catheter) for use, and can infuse liquid medicine into blood vessels and extract blood and liquid through the heparin cap, so that the medical cost of patients is reduced, and the working efficiency of nurses is improved; the standard locking joint is used for injecting heparin sodium to prevent blood backflow and prevent anticoagulation, and the application of a heparin cap imitation method to seal the tube can prolong the service life of the venous indwelling needle and reduce the medical expense of a patient.

A two-chamber central venous catheter has appeared among the prior art, and it is corresponding with it has two heparin caps, for reducing the emergence of stifled pipe, no matter the lumen uses, all need wash the tube to all lumens in proper order, wash the lumen in proper order, waste time and energy, and because of the washing process is asynchronous, the condition that one side lumen returns blood easily appears when leading to washing in tandem. When the double-cavity central venous catheter is used for simultaneously sealing the catheter, the catheter is easy to block due to the different technical levels such as unstable grasping of the syringe, uneven injection of catheter sealing liquid, unsmooth operation and the like, and the difference of personal operation, so that the design of the novel double-cavity central venous catheter flushing syringe is particularly necessary.

Disclosure of Invention

It is an object of the present invention to address the above-mentioned problems with the prior art and to provide an injector for a double-ended intravenous catheter.

The purpose of the utility model can be realized by the following technical scheme: the injector for the double-head venous catheter is characterized by comprising a cleaning device and a butt joint device, wherein the cleaning device comprises an empty cylinder, a piston and a piston handle, the empty cylinder is used for containing cleaning liquid, the piston handle is used for pushing and pulling a person to enable the piston to move back and forth in the empty cylinder along the length direction of the empty cylinder, the piston is connected with the piston handle through a piston rod, two liquid outlets are arranged at the bottom of the empty cylinder, the butt joint device is used for connecting the liquid outlets and the double-head deep venous catheter, and the butt joint device comprises two cleaning needle heads.

The working principle of the utility model is as follows: medical personnel firstly connect two cleaning needles with two liquid outlet nozzles, then aim the two cleaning needles to be inserted into two heparin caps on the double-head deep venous catheter, when in cleaning, the medical personnel pull a piston with a piston handle to suck physiological saline in an empty cylinder, aim the two needles to be inserted into the two heparin caps, push the piston through the piston handle to inject the physiological saline in the empty cylinder into the two heparin caps, at the moment, the physiological saline injected into the end caps firstly forms small vortexes in the heparin caps to wash out the residual liquid medicine in the heparin caps, then the residual liquid medicine flows into the catheter to wash off the liquid medicine attached to the inner wall of the catheter, because the two needles are arranged on one empty cylinder, the small vortexes in the two heparin caps can appear at the same time and have the same size, the cleaning effect is improved, and meanwhile, the liquid pressure received by the double-head deep venous catheter can also be the same, the double-cavity pipe is flushed simultaneously, the double-cavity pipe is ensured to be flushed synchronously in the flushing process, the phenomenon of blood return in a pipe cavity on one side generated in tandem flushing or the condition of uneven injection caused by personal operation difference is effectively avoided, and the flushing effect is improved.

In the above syringe for a double-ended intravenous catheter, the empty cylinder has a capacity of not less than 20 ml.

In the above syringe for a double-ended intravenous catheter, the hollow cylinder outer housing is provided with a scale.

In the above syringe for a double-ended intravenous catheter, the piston is provided with a rubber seal along the circumference.

In the above syringe for a double-ended intravenous catheter, the rubber sealing ring is in interference fit with the inner wall of the hollow cylinder.

In foretell an injector for double-end intravenous route, wash the syringe needle and include the needle tubing and with the spread groove of needle tubing intercommunication, the spread groove with the connection can be dismantled to the liquid outlet mouth.

In foretell an injector for double-end intravenous catheter, the spread groove inner wall is provided with the internal thread, the liquid outlet mouth surface is provided with the external screw thread, the internal thread with external screw thread cooperation swivelling joint.

In the syringe for a double-ended intravenous catheter described above, the top of the empty cylinder is provided with an annular projection along the circumference.

In the above syringe for a double-ended intravenous catheter, the piston handle is provided in a disc shape, the piston rod is provided in a cylindrical shape, and the diameter of the cross section of the piston handle is larger than that of the cross section of the piston rod.

In the above syringe for double-ended intravenous catheter, the two liquid outlets are symmetrically arranged at the bottom of the hollow cylinder.

Compared with the prior art, the utility model has the advantage of high washing degree.

Drawings

Fig. 1 is a schematic cross-sectional structure of the present invention.

Fig. 2 is a schematic view of the use state of the present invention.

In the figure, 1, a cleaning device; 2. a docking device; 3. an empty cartridge; 4. a piston; 5. a piston handle; 6. a piston rod; 7. a liquid outlet nozzle; 8. cleaning the needle head; 9. calibration; 10. a rubber seal ring; 11. a needle tube; 12. connecting grooves; 13. an internal thread; 14. an external thread; 15. an annular protrusion.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1-2, the injector for the double-ended intravenous catheter comprises an empty cylinder 3, a piston 4 and a piston handle 5, wherein the empty cylinder 3 is used for containing cleaning liquid, the piston handle 5 is used for pushing and pulling a person to enable the piston 4 to move back and forth in the empty cylinder 3 along the length direction of the empty cylinder 3, the piston 4 is connected with the piston handle 5 through a piston rod 6, two liquid outlets 7 are arranged at the bottom of the empty cylinder 3, a docking device 2 is used for connecting the liquid outlets 7 and the double-ended deep intravenous catheter, and the docking device 2 comprises two cleaning needles 8.

In more detail, the volume of the empty cylinder 3 is not less than 20 ml, and the CVC tube is buried in the central vein of a patient, so that the pushed liquid medicine pressure is low due to the large volume of the empty cylinder 3, the CVC tube is not easy to break, and the CVC tube is safe and reliable.

In further detail, the scale 9 is arranged on the outer shell of the hollow cylinder 3, so that the medical staff can accurately control the amount of the injected cleaning liquid.

In a further elaboration, the piston 4 is provided with a rubber sealing ring 10 along the circumference, so that the sealing effect is improved, and the leakage and other situations are prevented.

In a further detail, the rubber sealing ring 10 is in interference fit with the inner wall of the hollow cylinder 3, so that the sealing performance is enhanced.

Further saying in detail, wash syringe needle 8 include needle tubing 11 and with the spread groove 12 of needle tubing 11 intercommunication, spread groove 12 can dismantle with liquid outlet 7 and be connected, conveniently changes when washing syringe needle 8 damages, because wash syringe needle 8 is comparatively sharp-pointed, detachable sets up convenient transportation.

Further saying in detail, the inner wall of connecting groove 12 is provided with internal thread 13, and the surface of liquid outlet nozzle 7 is provided with external screw thread 14, and

internal thread

13 and 14 cooperation swivelling joints of external screw thread, when medical personnel wash, the great pressure that brings when the syringe needle need bear out the liquid, and traditional syringe needle leads to the syringe needle to drop easily through frictional force butt joint cylinder usually, and threaded connection closely can not drop, and the leakproofness is good moreover.

In further detail, the annular bulge 15 is arranged at the top of the hollow cylinder 3 along the circumference, the forefinger and the middle finger buckle the annular bulge 15 when the medical staff presses out the cleaning liquid, and the thumb presses the piston handle 5, so that the operation is very convenient.

In a detailed description, the piston handle 5 is arranged in a disc shape, the piston rod 6 is arranged in a cylindrical shape, the diameter of the cross section of the piston handle 5 is larger than that of the cross section of the piston rod 6, when the cleaning liquid is extracted, medical staff can pull up the piston handle 5 by buckling the part of the piston handle 5 exceeding the piston rod 6 with fingers, and the cleaning liquid extracting device is practical and convenient.

Further, say that two liquid outlet nozzles 7 symmetry set up in empty section of thick bamboo 3 bottom, and the specification size of two liquid outlet nozzles 7 is all the same, guarantees that the play liquid volume of two liquid outlet nozzles 7 is the same.

The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments, or alternatives may be employed, by those skilled in the art, without departing from the spirit or ambit of the utility model as defined in the appended claims.

Although a large number of terms are used herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims

1. The injector for the double-ended intravenous catheter is characterized by comprising a cleaning device (1) and a butt joint device (2), wherein the cleaning device (1) comprises an empty cylinder (3), a piston (4) and a piston handle (5), the empty cylinder (3) is used for containing cleaning liquid, the piston handle (5) is used for being pushed and pulled by a person to enable the piston (4) to move back and forth in the empty cylinder (3) along the length direction of the empty cylinder (3), the piston (4) is connected with the piston handle (5) through a piston rod (6), two liquid outlets (7) are arranged at the bottom of the empty cylinder (3), the butt joint device (2) is used for connecting the liquid outlets (7) and the double-ended deep intravenous catheter, and the butt joint device (2) comprises two cleaning needle heads (8).

2. Syringe for double-ended intravenous catheters according to claim 1, characterized in that said empty cartridge (3) has a capacity not less than 20 ml.

3. An injector for double-ended intravenous catheters according to claim 1, characterised in that the outer housing of the hollow cylinder (3) is provided with graduations (9).

4. Syringe for double-ended intravenous catheters according to claim 1, characterized in that said piston (4) is provided with a rubber sealing ring (10) along the perimeter.

5. Syringe for double-ended intravenous catheters according to claim 4, characterized in that said rubber sealing ring (10) has an interference fit with the inner wall of said hollow cylinder (3).

6. An injector for double-ended intravenous catheters according to claim 1, characterized in that said rinsing needle (8) comprises a needle tube (11) and a connecting slot (12) communicating with the needle tube (11), said connecting slot (12) being detachably connected to said outlet nozzle (7).

7. Syringe for double-ended intravenous catheters according to claim 6, characterized in that the inner wall of said connecting slot (12) is provided with an internal thread (13) and the outer surface of said spout (7) is provided with an external thread (14), said internal thread (13) being coupled in rotation with said external thread (14).

8. Syringe for double-ended intravenous catheters according to claim 1, characterized in that the top of the hollow cylinder (3) is provided with an annular projection (15) along the perimeter.

9. Syringe for a double-ended intravenous catheter according to claim 7, characterized in that said piston shank (5) is provided in the shape of a disc, said piston rod (6) is provided in the shape of a cylinder, the diameter of the cross section of said piston shank (5) being greater than the diameter of the cross section of said piston rod (6).

10. Syringe for double-ended intravenous catheters according to claim 1, characterized in that said two outlet nozzles (7) are symmetrically arranged at the bottom of said hollow cylinder (3).