CN2551256Y

CN2551256Y - Improved syringe

Info

Publication number: CN2551256Y
Application number: CN 02234336
Authority: CN
Inventors: 徐峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-04-28
Filing date: 2002-04-28
Publication date: 2003-05-21
Anticipated expiration: 2012-04-28

Abstract

The utility model relates to an improved syringe, which comprises a needle head, a syringe tube, a piston, and a piston push rod, wherein, a syringe sleeve tube with one end closed is arranged at the outside of the syringe tube; the inner diameter of the syringe sleeve tube is matched with the external diameter of the syringe tube; a pin pole is arranged on the end face of the closed end of the syringe sleeve tube corresponding to the needle head; an air port is arranged at the tube wall of the syringe sleeve tube. When in use, the syringe sleeve tube is sleeved on the syringe tube, enabling the needle point to be parallel with the outer edge of the pin pole; the closed end of the syringe sleeve tube is propped up to the injection part; a handle of the syringe sleeve tube is hooked by hand; the syringe handle is pushed to push the needle; the relative motion between the injection-liquid level calibration on the syringe tube and the open end of the syringe sleeve tube is observed to judge the depth of pushing the needle; in addition, the medicine liquid is exactly injected into the focus at the confirmed depth of a patient body. The utility model has the advantages of exact control of the depth and the position of pushing the needle, convenient operation, and avoidance of injecting the air into the human body.

Description

Improved syringe

Technical field: this utility model relates to a kind of improvement of medical apparatus and instruments, is meant a kind of improved syringe especially.

Background technology: conventional injector relies on medical worker's sensation and experience to determine for the position and the degree of depth of inserting needle when in use fully; And for some the inserting needle position is required accurately, the injection operation that depth of needle is strict, as bone marrow aspiration, lumbar puncture, joint puncture and prostate biopsy etc., the medical worker only takes the syringe needle on the syringe is unloaded, after earlier syringe needle being thrust the position that needs puncture then, syringe is plugged on the syringe needle of having good positioning that punctures again and extracts or inject operation out, its shortcoming is still can't accurately control depth of needle, firmly also being not easy when thrusting syringe needle controlled and grasped, and the air that remains in syringe needle inside can be pushed in the human body in the injection operation, thereby causes unnecessary pain and harm.

The utility model content: the purpose of this utility model is to provide a kind of and can accurately controls depth of needle and inserting needle position, easy operating and air can not injected intravital improved syringe.

The purpose of this utility model is to realize like this, a kind of improved syringe, include syringe needle, syringe, piston and piston push rod, wherein also be movably set with the syringe sleeve pipe of the end sealing that an internal diameter matches with the external diameter of syringe in the outside of syringe, be provided with syringe sleeve pipe handle at the telescopic opening of syringe, on position relative on the end face of the telescopic blind end of syringe, have a needle passing hole, also be provided with steam vent near on the tube wall of telescopic blind end one side of syringe with syringe needle.

When using this utility model injectable drug, only the syringe casing pipe sleeve need taken out full medicinal liquid and drained on the syringe of the syringe of residual gas in the syringe, and make the end of the needle body on the syringe needle concordant with the outer of the needle passing hole of syringe cannula tip; End face with the telescopic blind end of syringe pushes up on the position of needs injection then, hook syringe sleeve pipe handle with finger, and promotion syringe handle inserting needle, splash liquid level scale on the syringe and the relative motion between the syringe ferrule openings end edge in the time of inserting needle, to judge that syringe needle thrusts the intravital degree of depth; After reaching the depth of needle that needs, hook the syringe handle with finger, and promote the end of piston push rod, just can exactly the medicinal liquid in the syringe be injected the affected area of determining the degree of depth in the human body; The operating process of extracting the body fluid of determining degree of depth affected area in the body with this utility model is the same, does not just need liquid drug in syringe in advance; Because inserting needle after the first in use perfusion of this utility model is not so it can be injected into inside of human body with air residual in syringe needle or the syringe; And what it adopted is the operating procedure of locating the back inserting needle earlier, so have inserting needle position characteristic of accurate; In addition, owing in the process of inserting needle, can judge the degree of depth of inserting needle exactly by the liquid level scale on the syringe, so it has the advantages that to control depth of needle exactly.

Description of drawings: accompanying drawing is that this utility model is in the sectional structure sketch map under the preceding standard state of injection inserting needle

1-piston push rod 5-needle passing hole 9-piston among the figure

2-medicinal liquid 6-exhaust groove 10-syringe sleeve pipe handle

3-syringe needle 7-steam vent 11-syringe

4-needle body 8-syringe sleeve pipe 12-syringe handle

The specific embodiment: the utility model will be further described below in conjunction with accompanying drawing, a kind of improved syringe, include syringe needle 3, syringe 11, piston 9 and piston push rod 1, wherein also be movably set with the syringe sleeve pipe 8 of the end sealing that an internal diameter matches with the external diameter of syringe 11 in the outside of syringe 11, syringe 11 can move forward and backward in syringe sleeve pipe 8; Opening at syringe sleeve pipe 8 is provided with syringe sleeve pipe handle 10, has a needle passing hole 5 on position relative with syringe needle 3 on the end face of the blind end of syringe sleeve pipe 8, and the effect of needle passing hole 5 is to provide a passage for the needle body on the syringe needle 34; On tube wall, also be provided with steam vent 7, in syringe sleeve pipe 8, push away like this, when drawing syringe 11, just can discharge or suck air by steam vent 7 near blind end one side of syringe sleeve pipe 8.

Because on the barrel of syringe 11, have the containing mark of vertical distribution, syringe for different model, the spacing of containing mark is unified on its syringe 11, so when using this utility model, can determine and control the degree of depth of inserting needle by the containing mark on the syringe 11; But, in order to determine more accurately and the degree of depth of control inserting needle, can also be on the tube wall of syringe sleeve pipe 8 and/or the length scale of vertical distribution is set on the barrel of syringe 11.

For the air of syringe sleeve pipe 8 blind end inboards fully can being discharged, be provided with the exhaust groove 6 that radially-arranged two ends are connected with steam vent 7 and needle passing hole 5 respectively in the inboard of the end face of the blind end of syringe sleeve pipe 8.

Standard state before this utility model puncture is that syringe 11 is inserted among the syringe sleeve pipe 8, and the end of the needle body 4 on the syringe 11 front end syringe needles 3 is concordant with the outer of needle passing hole 5.

Use the process of this utility model injectable drug as follows: earlier syringe sleeve pipe 8 to be enclosed within on the syringe 11 of the syringe of taking out full medicinal liquid 2 and draining syringe 11 interior residual gas, and to make the end of the needle body 4 on the syringe needle 3 concordant with the outer of the needle passing hole 5 of syringe sleeve pipe 8 ends; End face with the blind end of syringe sleeve pipe 8 pushes up on the position of needs injection then, hook syringe sleeve pipe handle 10 with finger, and promotion syringe handle 12 inserting needles, splash liquid level scale on the syringe 11 or the relative motion between length scale and the syringe sleeve pipe 8 opening edges in the time of inserting needle, to judge that the needle body 4 thrusts the intravital degree of depth of people on the syringe needle 3; After reaching the depth of needle that needs, hook syringe handle 12 with finger, and promote the end of piston push rod 1, just can exactly the medicinal liquid 2 in the syringe 11 be injected into the affected area of determining the degree of depth in the human body.Use the operating process of the body fluid of determining degree of depth affected area in this utility model extraction body the same, just do not need liquid drug 2 in syringe 11 in advance.

Claims

1. improved syringe, include syringe needle (3), syringe (11), piston (9) and piston push rod (1), it is characterized in that also being movably set with the syringe sleeve pipe (8) of the end sealing that an internal diameter matches with the external diameter of syringe (11) in the outside of syringe (11), opening at syringe sleeve pipe (8) is provided with syringe sleeve pipe handle (10), on position relative on the end face of the blind end of syringe sleeve pipe (8), have a needle passing hole (5), on tube wall, also be provided with steam vent (7) near blind end one side of syringe sleeve pipe (8) with syringe needle (3).

2. a kind of improved syringe according to claim 1 is characterized in that on the tube wall of syringe sleeve pipe (8) and/or be provided with the length scale of vertical distribution on the barrel of syringe (11).

3. a kind of improved syringe according to claim 1 and 2 is characterized in that being provided with the exhaust groove (6) that radially-arranged two ends are connected with steam vent (7) and needle passing hole (5) respectively in the inboard of the end face of the blind end of syringe sleeve pipe (8).