CN214970376U - Spiral syringe - Google Patents

Abstract

The utility model relates to a spiral injector, which comprises an inner injector and an outer injector, wherein the inner injector is connected inside the outer injector; the outer injector comprises an outer needle cylinder and a spiral push rod, the outer needle cylinder is of a double-layer structure and comprises an inner layer and an outer layer, the outer layer of the outer needle cylinder is a smooth and transparent shell, and a threaded part is arranged from the middle to the bottom of the inner wall of the inner layer of the outer needle cylinder; the spiral push rod is provided with threads. The inner syringe is positioned at the front end in the outer syringe; the spiral push rod is detachably connected with the inner syringe and is connected with a thread part at the rear end of the inner layer of the outer syringe. The inner push rod of the inner injector is pushed by the spiral push rod in the outer injector, the medicine can be injected more laborsavingly and accurately by the design of thread rotation, and meanwhile, the design of the push rod tail is more convenient for a doctor to take and exert force during injection, so that the oil medicine can be injected more laborsavingly. The utility model discloses simple structure, convenient to use can use widely.

Description

Spiral syringe

Technical Field

The utility model belongs to the technical field of medical supplies, a spiral syringe is related to.

Background

Iodized oil injection is generally used in operations such as hepatic artery intubation chemoembolization and the like, and the iodized oil is a light yellow to yellow clear oily liquid at normal temperature and is insoluble in water. At present, a common disposable syringe is usually used for injecting the iodized oil injection, when an interventionalist injects a medicine, the syringe cylinder part of the syringe is fixed by the left hand, and the push rod of the syringe is forcibly injected by the finger pulp of the thumb of the right hand or the thenar of the thumb of the right hand. The medicine injected by the disposable syringe is generally different from 10ml to 30ml, and the oil medicine has higher density, so that great strength is required to inject the medicine filled with the iodized oil into the liver lesion through the micro catheter during the injection, and the use of the traditional syringe can cause the situations of spasm, aching pain, numbness and the like of the right hand of an interventionalist, thereby influencing the subsequent operation progress. The inner push rod of the disposable syringe used at present is flat, the force can not be easily controlled when the syringe is injected, if the syringe is injected too hard, the connection part of the syringe and the micro catheter can be separated, so that the medicine can be sprayed on a machine tool, an interventional doctor or a DSA display screen, and the overflow condition of the chemotherapy medicine is caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem, the utility model provides a when overcoming the syringe among the prior art and injecting the finish medicine hard and can not the problem of accurate control quantity, again can zonulae occludens syringe and little pipe to a spiral syringe of unexpected separation when injecting.

A spiral injector comprises an inner injector and an outer injector, wherein the inner injector is connected with the inner part of the outer injector; the outer injector comprises an outer needle cylinder and a spiral push rod, the outer needle cylinder is of a double-layer structure and comprises an inner layer and an outer layer, the outer layer of the outer needle cylinder is a smooth and transparent shell, and a threaded part is arranged from the middle to the bottom of the inner wall of the inner layer of the outer needle cylinder; the spiral push rod is provided with threads which are matched with the threads on the inner wall of the inner layer of the outer needle cylinder.

The further technical scheme is as follows: the inner syringe is fixedly connected with the front end of the outer syringe; the spiral push rod of the outer syringe is detachably connected with the inner syringe and is connected with the thread part of the inner layer of the outer syringe.

The further technical scheme is as follows: the inner injector comprises an inner needle cylinder and an inner push rod, and the top end of the inner needle cylinder is provided with a joint; the bottom of the handle of the inner push rod is provided with a circular hole groove.

The further technical scheme is as follows: the top of the outer needle cylinder is provided with a threaded interface, and the inner wall of the threaded interface is provided with threads.

The further technical scheme is as follows: the top of the spiral push rod is provided with a push rod head which is in a cone structure and can be connected with a hole groove of the rod handle of the inner push rod.

The further technical scheme is as follows: the bottom of the outer syringe is provided with a round or square handle.

The further technical scheme is as follows: the bottom of the spiral push rod is provided with a push rod tail which is in a fishtail shape or a butterfly shape.

The further technical scheme is as follows: the outer injector is made of disposable plastic material or glass material.

The further technical scheme is as follows: the inner needle cylinder is provided with capacity scale marks.

The utility model has the advantages that: the inner push rod of the inner injector is pushed by the spiral push rod in the outer injector, the design of the spiral push rod and the threads in the outer injector can push the medicine more labor-saving and accurately, meanwhile, the design of the push rod tail is more convenient for a doctor to take and force during injection, and the oil medicine is injected more labor-saving and accurately.

Drawings

FIG. 1 is a block diagram of the present invention;

fig. 2 is a schematic view of an inner injector of the present invention;

FIG. 3 is a schematic view of the inner barrel of the present invention;

fig. 4 is a schematic view of the inner ram of the present invention;

FIG. 5 is a schematic view of an outer injector of the present invention;

fig. 6 is a schematic view of the screw pusher of the present invention;

FIG. 7 is a schematic view of the inner injector of the present invention connected to the screw pushing rod;

FIG. 8 is an enlarged schematic view of portion A of FIG. 1;

reference numerals: 1. the syringe comprises an inner syringe, 2. an outer syringe, 3. an inner syringe, 4. an inner push rod, 5. an inner push rod handle, 6. scale marks, 7. a joint, 8. an outer syringe, 81. an outer layer, 82. an inner layer, 9. a visible part, 10. a threaded part, 11. a threaded interface, 12. a handle, 13. a spiral push rod, 14. a push rod head, 15. a push rod body, 16. a push rod tail.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

As shown in figure 1, the spiral injector comprises an inner injector 1 and an outer injector 2, wherein the outer injector is of a hollow structure, the bottom of the outer injector is provided with an opening, the inner injector 1 is positioned at the front end in the outer injector 2, and the outer injector 2 can assist in pushing the inner injector 1 for injection, so that the labor-consuming burden of injecting oil medicaments is reduced.

As shown in fig. 2-4, the inner syringe 1 comprises an inner syringe 3 and an inner push rod 4, the inner push rod 4 can be slidably connected with the inner wall of the inner syringe 3, and the outer wall of the inner syringe 3 is provided with volume scale marks 6, which can provide precise medicine dosage for a doctor during injection; the top of the inner needle cylinder is also provided with a joint 7. The bottom center of the inner push rod handle 5 at the bottom of the inner push rod is provided with a circular hole groove.

As shown in fig. 5 to 7, the outer injector 2 comprises an outer needle cylinder 8 and a screw pusher 13. Outer syringe 8 is transparent visual bilayer structure, including inlayer and skin, and its skin 81 is smooth straight shell, and the top of inlayer 82 is flat smooth visual part 9 to the middle part, can be through visual part 9 observation inner syringe 2's the condition of pushing a bolus. The inner layer 82 of the outer cylinder 8 is provided with a threaded portion 10 from the middle to the bottom thereof, which is capable of being threadedly coupled with the screw pusher 13. The helical thrust rod 13 can be screwed in and out along the threaded portion 10 of the inner layer 82 of the outer needle cylinder 8. The two sides of the bottom of the outer needle cylinder 8 are provided with square or round handles 12 which are convenient for taking and holding the utility model and placing fingers to inject. As shown in fig. 8, the top of the outer cylinder 8 is further provided with a screw interface 11, and the inner wall of the screw interface 11 is provided with screw threads. After the joint 7 at the top of the inner needle cylinder is placed in the threaded interface 11, the threaded interface 11 is in threaded connection with the micro-catheter, so that the joint 7 of the inner needle cylinder is also tightly connected into the micro-catheter. The connection of the threaded interface 11, the joint 7 and the micro-catheter can prevent the injection medicine from splashing caused by the sliding of the injector when in use, and ensure the smooth proceeding of injection. The spiral push rod 13 comprises a push rod head 14, a push rod body 15 and a push rod tail 16, wherein the push rod body 15 is provided with threads, the push rod head 14 is arranged at the top end of the push rod body 15, and the push rod tail 16 is arranged at the bottom of the push rod body 15. The putter head 14 is of a conical configuration and is removably attachable to the bore in the inner putter stem 5 of the inner syringe, and in one embodiment, the putter head is held at its tip within the bore to prevent the syringe from falling or moving during the injection process. Meanwhile, the conical structure can reduce the contact area with the inner push rod handle, and the pressure intensity during pushing can be increased during rotation. In another embodiment, the top end of the push rod head is provided with screw threads, the inner wall of a circular hole groove at the bottom of the inner push rod handle 5 is also provided with screw threads, and the push rod head can be in threaded connection with the hole groove at the bottom of the inner push rod handle 5. The push rod tail 16 of the spiral push rod 13 is in a fishtail shape or butterfly structure, and the branched structure of the rod tail can save more labor when rotating.

The outer diameter of the spiral push rod 13 is the same as the inner diameter of the outer syringe 8, the spiral push rod 13 can be connected with the threaded part 10 in the outer syringe, the push rod tail 16 is rotated, so that the spiral push rod is pushed along the threaded part 10 of the outer syringe, and under the pressure of the spiral push rod, the inner push rod of the inner syringe is pushed along with the spiral push rod, and the medicine is guided into the microcatheter through the threaded interface 11. The length of the threaded portion 10 of the outer syringe is the same as the length of the threaded portion of the pushrod body 15, so that the pushrod head 14 just reaches the top end of the threaded portion 10 of the outer syringe after the entire injection of the medicine in the inner syringe 1 is completed.

The utility model is a disposable injector, the used material is plastic material, and the plastic material is destroyed immediately after use.

In another embodiment, the outer injector 2 is made of glass or a high temperature resistant metal. The inner injector can be a common disposable injector, and after the inner injector is used, the inner injector is discarded, and the outer injector is recycled after high-temperature sterilization. The outer injector can be adapted to injectors of various types, so that the cost is effectively reduced, and the injector is simple and practical.

The utility model discloses a use method:

the inner syringe may be separated from the outer syringe and used alone for drawing the medicament, which is then placed into the outer syringe and mated with the outer barrel for injection using a screw pusher. Firstly, an inner syringe is placed at the upper end inside an outer syringe, a joint of the inner syringe is placed in a threaded interface of the outer syringe, then a spiral push rod is rotated along threads on the inner layer of the outer syringe until a circular hole groove on an inner push rod handle of the inner syringe is connected with a push rod head of the spiral push rod, and then a micro-catheter is installed on the threaded interface of the outer syringe and is tightly connected with the threads on the inner wall of the threaded interface, so that the joint of the inner syringe is also fixed in the micro-catheter. During injection, the butterfly-shaped part at the tail part of the spiral push rod is rotated, so that the spiral push rod is pushed forwards along the inner side of the thread inner wall of the outer syringe clockwise, then the inner push rod handle of the inner syringe is pushed to inject, the medicament in the inner syringe is injected into the micro-catheter, the scales on the syringe of the inner syringe can be observed through the transparent outer syringe, and the speed of rotating the butterfly-shaped part at the tail part of the spiral push rod and the medicament dosage are controlled. After the use is finished, the butterfly-shaped part at the tail of the screw push rod is reversely rotated, the disposable plastic screw push rod and the inner injector are taken out, and the disposable plastic screw push rod and the inner injector are destroyed. If the outer syringe is made of glass, the syringe can be used again after high-temperature disinfection treatment.

The utility model discloses simple structure, convenient to use, syringe needle or little pipe that can the multiple specification of adaptation, the practicality is strong. Through the setting of outer syringe, can extract more laborsavingly and inject oil type medicine, the hickey of outer syringe head end outer inner wall makes injection ware and little pipe be difficult for droing in the injection process. The utility model discloses it is with low costs, can use widely.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (9)

1. A spiral injector is characterized by comprising an inner injector and an outer injector, wherein the inner injector is connected inside the outer injector; the outer injector comprises an outer needle cylinder and a spiral push rod, the outer needle cylinder is of a double-layer structure and comprises an inner layer and an outer layer, the outer layer of the outer needle cylinder is a smooth and transparent shell, and a threaded part is arranged from the middle to the bottom of the inner wall of the inner layer of the outer needle cylinder; the spiral push rod is provided with threads which are matched with the threads on the inner wall of the inner layer of the outer needle cylinder.

2. The screw injector according to claim 1 wherein the inner injector is located at the forward end of the outer barrel; the spiral push rod is detachably connected with the inner syringe and is connected with the thread part of the inner layer of the outer syringe.

3. The screw injector according to claim 1 wherein the inner injector comprises an inner barrel and an inner ram, the head end of the inner barrel having a connector; the bottom of the handle of the inner push rod is provided with a circular hole groove.

4. The screw injector of claim 3, wherein the top of the outer barrel is threaded and the inner wall of the threaded port is threaded.

5. A spiral injector according to claim 3 wherein the spiral push rod has a conical head at the top, and the head is connected to the hole of the stem of the inner push rod.

6. The screw injector of claim 1 wherein the bottom of the outer barrel is provided with a circular or square handle.

7. The screw injector of claim 1 wherein the bottom of the screw plunger is provided with a plunger tip, the plunger tip being fishtail or butterfly shaped.

8. The screw-type injector according to claim 1 wherein the outer injector is a disposable plastic or glass material.

9. A screw-type syringe according to claim 3 wherein the inner barrel is provided with volumetric scale markings.

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