CN210673780U - Negative pressure syringe - Google Patents
Negative pressure syringe Download PDFInfo
- Publication number
- CN210673780U CN210673780U CN201920801075.8U CN201920801075U CN210673780U CN 210673780 U CN210673780 U CN 210673780U CN 201920801075 U CN201920801075 U CN 201920801075U CN 210673780 U CN210673780 U CN 210673780U
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- Prior art keywords
- cylinder
- negative pressure
- pointer
- plate
- needle cylinder
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- Expired - Fee Related
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Abstract
The utility model discloses a negative pressure syringe, including the cylinder, the intermediate position department of cylinder bottom is provided with the syringe needle, the inside of cylinder is provided with the pointer, the piston head with the mutual adaptation of cylinder is installed to the bottom of pointer, the press plate is installed at the top of pointer, the roof is installed at the top of cylinder, the sleeve pipe is installed to one side of roof inside, the litter is installed to one side of press plate bottom, the litter extends to the sheathed tube inside, the top in the litter outside is provided with buffer spring, the cylinder is kept away from the top of sleeve pipe one side and is installed the adjustment tank, spacing spout is installed to the inboard of adjustment tank. The utility model discloses the device utilizes buffer spring's elasticity restoring force through mutually supporting of buffer spring, pressing plate, pointer and piston head, and the negative pressure need not medical staff manual medicine, the more convenient of suction with liquid medicine extraction to the inside of cylinder.
Description
Technical Field
The utility model relates to the technical field of syringes, in particular to a negative pressure syringe.
Background
In clinical medical's work, when medical staff punctured the patient, generally adopt ordinary syringe, the inside that the piston push rod that needs manual drawing to get the syringe made the cylinder produces the negative pressure, wherein with the liquid medicine suction, long this in the past, a lot of injections daily, a lot of extractions, medical staff's hand all can grind out a lot of cocoons, and the extraction in-process, stability is relatively poor, the injection volume of liquid medicine is difficult to accurate controlling, follow-up medical staff still will discharge unnecessary liquid medicine, it is extravagant too big, medical staff's operation is comparatively hard.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a negative pressure syringe to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a negative pressure syringe comprises a needle cylinder, a needle head is arranged at the middle position of the bottom of the needle cylinder, a pointer is arranged inside the needle cylinder, a piston head matched with the needle cylinder is installed at the bottom of the pointer, a pressing plate is installed at the top of the pointer, a top plate is installed at the top of the needle cylinder, a sleeve is installed on one side inside the top plate, a sliding rod is installed on one side of the bottom of the pressing plate and extends into the sleeve, a buffer spring is arranged at the top of the outer side of the sliding rod, an adjusting groove is installed at the top of the needle cylinder, which is far away from one side of the sleeve, a limiting sliding groove is installed on the inner side of the adjusting groove, a screw rod shaft is arranged at the middle position inside the adjusting groove, a screw rod sleeve matched with the screw rod shaft is sleeved on the outer side of the screw rod shaft, a, the bottom in the screw shaft outside is installed the profile of tooth regulating wheel, and the lead screw sleeve pipe keeps away from one side of slider and installs backup pad A, the connecting plate is installed to one side that the cylinder was kept away from at backup pad A top, the baffle is installed at the top of connecting plate, backup pad B is installed to the intermediate position department at roof both ends.
Preferably, one side of one end of the front face of the connecting plate is provided with scale marks.
Preferably, one side of the top plate, which is close to the connecting plate, is provided with a pointer.
Preferably, the bottom of the supporting plate B is provided with a spongy cushion.
Preferably, the top of the pressing plate is provided with a massage protrusion.
Preferably, the top of the inner side of the needle is provided with a rubber ring.
Compared with the prior art, the beneficial effects of the utility model are that: this negative pressure syringe passes through buffer spring, press the clamp plate, mutually support of pointer and piston head, utilize buffer spring's elastic restoring force, the negative pressure extracts the liquid medicine to the inside of cylinder, need not medical staff's manual medicine that adds, it is more convenient to aspirate, mutually support through litter and sheathed tube, make the more stable of removal orbit according to the clamp plate, through the profile of tooth regulating wheel, the adjustment tank, the slider, the lead screw sleeve pipe, backup pad A, the lead screw axle, spacing spout, backup pad A, mutually support of connecting plate and baffle, the injection volume to the liquid medicine sets for, the injection volume is more accurate, need not the manual excessive liquid medicine of getting rid of medical personnel, the liquid medicine waste has been avoided.
Drawings
Fig. 1 is a front sectional view of the present invention;
FIG. 2 is a front view of the present invention;
fig. 3 is a top view of the present invention.
In the figure: 1. a needle head; 2. a needle cylinder; 3. a piston head; 4. a tooth-shaped regulating wheel; 5. an adjustment groove; 6. a slider; 7. a lead screw sleeve; 8. a support plate A; 9. a screw shaft; 10. a limiting chute; 11. a connecting plate; 12. A baffle plate; 13. a pressing plate; 14. a buffer spring; 15. a top plate; 16. a sleeve; 17. a slide rod; 18. A pointer; 19. and a support plate B.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides an embodiment: a negative pressure injector comprises a needle cylinder 2, a needle head 1 is arranged at the middle position of the bottom of the needle cylinder 2, a pointer 18 is arranged inside the needle cylinder 2, a piston head 3 matched with the needle cylinder 2 is arranged at the bottom of the pointer 18, a pressing plate 13 is arranged at the top of the pointer 18, a top plate 15 is arranged at the top of the needle cylinder 2, a sleeve 16 is arranged at one side inside the top plate 15, a slide rod 17 is arranged at one side of the bottom of the pressing plate 13, the slide rod 17 extends to the inside of the sleeve 16, a buffer spring 14 is arranged at the top of the outer side of the slide rod 17, an adjusting groove 5 is arranged at the top of the side, far away from the sleeve 16, of the needle cylinder 2, a limiting sliding groove 10 is arranged at the inner side of the adjusting groove 5, a screw shaft 9 is arranged at the middle position inside the adjusting groove 5, a screw sleeve 7 matched with the screw shaft 9 is, the bottom outside the screw shaft 9 is provided with a tooth-shaped regulating wheel 4, one side of the screw sleeve 7 far away from the slide block 6 is provided with a support plate A8, one side of the top of the support plate A8 far away from the needle cylinder 2 is provided with a connecting plate 11, the top of the connecting plate 11 is provided with a baffle 12, and the middle position of the two ends of the top plate 15 is provided with a support plate B19.
In this implementation, one side of the positive one end of connecting plate 11 is provided with the scale mark, set for the rising position of connecting plate 11, one side that roof 15 top is close to connecting plate 11 is provided with pointer 18, instruct the scale mark, be convenient for medical staff observes the rising height of connecting plate 11, the bottom of backup pad B19 is provided with the foam-rubber cushion, laminate with medical staff's finger, the comfort level is better, the top of pressing plate 13 is provided with the massage arch, laminate with medical staff's thumb, when reducing the injection, the numb sense of finger portion, the inboard top of syringe needle 1 is provided with the rubber circle, it is inseparabler to be connected with cylinder 2.
The working principle is as follows: when the device is used, the threaded shaft 9 is driven to rotate by rotating the toothed adjusting wheel 4, the slide block 6 and the limit slide groove 10 slide mutually, the threaded sleeve 7, the support plate A8, the connecting plate 11 and the baffle plate 12 on the threaded sleeve are adjusted to a specified height by observing the scale mark numerical value indicated by the pointer 18, so that the position of the pressing plate 13 is limited, after the adjustment is finished, the piston head 3 is pushed to the bottom of the needle cylinder 2 by pressing the pressing plate 13, the buffer spring 14 is in a compressed state, the needle head 1 is inserted under the liquid level of a medicine bottle, the pressing plate 13, the pointer 18 and the piston head 3 are driven to move upwards by the elastic restoring force of the buffer spring 14 and the slide rod 17 and the sleeve 16 slide mutually, the liquid medicine is automatically sucked into the syringe by the action of negative pressure, and the height of the pressing plate 13 is fixed by the baffle plate 12, thereby controlling the amount of the liquid medicine sucked.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. A negative pressure injector comprising a needle cylinder (2), characterized in that: the needle head (1) is arranged at the middle position of the bottom of the needle cylinder (2), a pointer (18) is arranged inside the needle cylinder (2), a piston head (3) matched with the needle cylinder (2) is installed at the bottom of the pointer (18), a pressing plate (13) is installed at the top of the pointer (18), a top plate (15) is installed at the top of the needle cylinder (2), a sleeve (16) is installed at one side of the inside of the top plate (15), a sliding rod (17) is installed at one side of the bottom of the pressing plate (13), the sliding rod (17) extends into the sleeve (16), a buffer spring (14) is arranged at the top of the outer side of the sliding rod (17), an adjusting groove (5) is installed at the top of one side, far away from the sleeve (16), of the needle cylinder (2), a limiting sliding groove (10) is installed at the inner side of the adjusting groove (5), and a screw shaft (9) is arranged at, the outside cover of screw axle (9) is equipped with rather than screw sleeve pipe (7) of mutually supporting, slider (6) are installed to one side of screw sleeve pipe (7), slider (6) mutually support with spacing spout (10), profile of tooth regulating wheel (4) are installed to the bottom in the screw axle (9) outside, and screw sleeve pipe (7) keep away from one side of slider (6) and install backup pad A (8), one side that cylinder (2) were kept away from at backup pad A (8) top is installed connecting plate (11), baffle (12) are installed at the top of connecting plate (11), backup pad B (19) are installed to the intermediate position department at roof (15) both ends.
2. A negative pressure syringe according to claim 1, wherein: and scale marks are arranged on one side of one end of the front surface of the connecting plate (11).
3. A negative pressure syringe according to claim 1, wherein: and a pointer (18) is arranged on one side, close to the connecting plate (11), of the top plate (15).
4. A negative pressure syringe according to claim 1, wherein: the bottom of the supporting plate B (19) is provided with a spongy cushion.
5. A negative pressure syringe according to claim 1, wherein: the top of the pressing plate (13) is provided with a massage bulge.
6. A negative pressure syringe according to claim 1, wherein: the top of the inner side of the needle head (1) is provided with a rubber ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920801075.8U CN210673780U (en) | 2019-05-30 | 2019-05-30 | Negative pressure syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920801075.8U CN210673780U (en) | 2019-05-30 | 2019-05-30 | Negative pressure syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210673780U true CN210673780U (en) | 2020-06-05 |
Family
ID=70897849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920801075.8U Expired - Fee Related CN210673780U (en) | 2019-05-30 | 2019-05-30 | Negative pressure syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210673780U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111870776A (en) * | 2020-08-03 | 2020-11-03 | 西安交通大学医学院第二附属医院 | Injection device for scar repair |
| CN113397667A (en) * | 2021-07-21 | 2021-09-17 | 中山大学附属第五医院 | Thyroid cyst puncture device |
| CN114288181A (en) * | 2021-12-15 | 2022-04-08 | 北京伏尔特技术有限公司 | Closed drug transfer device capable of realizing air pressure balance drug transfer in closed environment |
| CN114526956A (en) * | 2022-02-17 | 2022-05-24 | 华威特（江苏）生物制药有限公司 | A quick extractor for bacterin detects |
-
2019
- 2019-05-30 CN CN201920801075.8U patent/CN210673780U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111870776A (en) * | 2020-08-03 | 2020-11-03 | 西安交通大学医学院第二附属医院 | Injection device for scar repair |
| CN113397667A (en) * | 2021-07-21 | 2021-09-17 | 中山大学附属第五医院 | Thyroid cyst puncture device |
| CN114288181A (en) * | 2021-12-15 | 2022-04-08 | 北京伏尔特技术有限公司 | Closed drug transfer device capable of realizing air pressure balance drug transfer in closed environment |
| CN114526956A (en) * | 2022-02-17 | 2022-05-24 | 华威特（江苏）生物制药有限公司 | A quick extractor for bacterin detects |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200605 Termination date: 20210530 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |