CN211749926U - Anti-drop fills needle - Google Patents
Anti-drop fills needle Download PDFInfo
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- CN211749926U CN211749926U CN201820346237.9U CN201820346237U CN211749926U CN 211749926 U CN211749926 U CN 211749926U CN 201820346237 U CN201820346237 U CN 201820346237U CN 211749926 U CN211749926 U CN 211749926U
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- needle
- water injection
- injection channel
- fixing
- clamping piece
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Abstract
The utility model discloses an anticreep formula fills needle. The needle comprises a sleeve, wherein the end part of the sleeve is connected with a fixing component, a needle core is arranged in the sleeve, and the tip part of the needle core penetrates through the fixing component; the fixing component comprises a fixing clamping piece, one side of the fixing clamping piece is provided with a connecting part, the other side of the fixing clamping piece is provided with a puncturing part, the inner wall of the fixing component is also internally provided with a water injection channel, the inlet of the water injection channel is arranged on the connecting part and is communicated with an injection guide pipe, the outlet of the water injection channel is communicated with a fixing cavity arranged on the side wall of the puncturing part, the fixing cavity is connected with a movable piece through a rotating shaft, the inner side of the movable piece is provided with a rebound sheet, the outlet close to the water injection channel is also provided with an elastic bag body, and the opening end of the elastic; the tip end of the needle core penetrates through the connecting part, the fixing clamping piece and the puncturing part in sequence. The utility model has the characteristics of simple structure and fixed effectual.
Description
Technical Field
The utility model relates to a device that medical field used, especially a anticreep formula fills needle.
Background
The aortic perfusion needle used in the existing cardiac surgery mainly depends on sewing a needle on the aortic wall and fastening the perfusion needle after tightening. The fixation is only to fix the outside of the perfusion needle on the aorta wall, and can be performed when the aorta has high pressure and the aorta wall has high tension. The above-described fixation easily leads to two situations: firstly, the head end of the perfusion needle can still slide after the external fixation, the slight inclination of the tail part of the perfusion needle can lead the head end of the perfusion needle to slide out of the aorta wall, and especially in the infant operation, the head end of the perfusion needle is short due to the small inner diameter of ascending aorta, and the small deviation can lead the perfusion needle to slide out; another situation is that the suture is tightened when the aorta is in high tension, and the aorta is in a low tension state after the aorta is cut or before the aorta is closed and the aorta incision is closed and the heart is in a double-beat state, and before the aorta is cut, the fixation of the perfusion needle is loosened, so that the perfusion needle slides out of the aorta wall. If the dropping of the perfusion needle occurs in the perfusion process, poor heart perfusion can occur, the hot ischemia time is prolonged, the postoperative resuscitation is difficult, even the postoperative cardioplegia occurs, and the serious patient can cause death; if the slipping-out of the perfusion needle occurs at the moment of perfusion just after the blockage, the reinsertion of the perfusion needle not only can cause heart thermal ischemia, excessive filling of the heart and life-threatening malignant arrhythmia such as ventricular fibrillation and the like due to time delay, but also can increase the risk of serious complications such as interlayer induced by puncture and the like due to overhigh pressure of the ascending aorta at the moment. If the dropping of the perfusion needle occurs in the process of sucking back and exhausting after the aorta is opened, serious complications such as cerebral infarction, hemiplegia and the like caused by gas embolism can occur because the gas can not be exhausted smoothly. As can be seen from the above, the dropping of the infusion needle can cause serious consequences, and how to solve the problem of "dropping of the infusion needle" becomes a problem to be solved urgently at present.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an anticreep formula fills needle. The utility model has the characteristics of simple structure and fixed effectual.
The technical scheme of the utility model: a drop-proof perfusion needle comprises a sleeve, wherein the end part of the sleeve is connected with a fixing component, a needle core is arranged in the sleeve, and the tip part of the needle core penetrates through the fixing component; the fixing component comprises a fixing clamping piece, one side of the fixing clamping piece is provided with a connecting part, the other side of the fixing clamping piece is provided with a puncturing part, the inner wall of the fixing component is also internally provided with a water injection channel, the inlet of the water injection channel is arranged on the connecting part and is communicated with an injection guide pipe, the outlet of the water injection channel is communicated with a fixing cavity arranged on the side wall of the puncturing part, the fixing cavity is connected with a movable piece through a rotating shaft, the inner side of the movable piece is provided with a rebound sheet, the outlet close to the water injection channel is also provided with an elastic bag body, and the opening end of the elastic; the tip end of the needle core penetrates through the connecting part, the fixing clamping piece and the puncturing part in sequence.
In the anti-falling perfusion needle, the needle core in the sleeve is further provided with an observation side hole.
In the anti-falling perfusion needle, the outer wall of the needle core in the sleeve is also provided with a positioning ring.
In the anti-falling perfusion needle, the side wall of the puncturing part is further provided with an air vent.
In the anti-drop perfusion needle, the injection port of the injection guide tube is externally connected with a single switch tee joint for injection.
Advantageous effects
Compared with the prior art, the utility model discloses be equipped with the water injection channel of intercommunication in the connecting portion of fixed subassembly, fixed card and the inner wall of portion of stabbing, the entry of water injection channel is located on the connecting portion and is communicated with the injection guiding tube, the export of water injection channel is communicated with the fixed cavity that is located on the side wall of stabbing, fixed cavity is connected with the movable plate through the pivot, the movable plate inboard is equipped with the shell-back piece, the exit that is close to the water injection channel still is equipped with the elasticity utricule, the open end of elasticity utricule communicates with the water injection channel and is fixed in; when the device is used, the tip part of the needle core and the puncturing part of the fixing component are inserted into an aorta, the needle core is withdrawn, then the normal saline is injected into the water injection channel through the injection hole of the injection guide pipe, the elastic capsule body gradually extends along the water injection channel along with the injection of the normal saline, the extended elastic capsule body contacts one end of the movable sheet and applies force to the movable sheet, the movable sheet rotates along the rotating shaft until the movable sheet is parallel to the fixing clamping sheet, at the moment, the movable sheet and the fixing clamping sheet form clamping on the vascular wall, so that the dropping of the injection needle is well prevented, and then the injection is performed; the movable sheet is in a furled state when the perfusion needle is inserted into the blood vessel and is hidden in the fixed cavity, so that the normal insertion of the perfusion needle cannot be influenced, after the perfusion needle is inserted, the perfusion needle can be well fixed by injecting physiological saline into the water injection channel, the fixing effect is good, and moreover, as the injected liquid is the physiological saline, even if the elastic bag body is broken, the liquid (the physiological saline) flowing out of the elastic bag body cannot cause injury to a patient, and the use is safe; when the sleeve is pulled out after the filling is finished, the physiological saline in the water injection channel is led out from the injection guide pipe, at the moment, the elastic capsule body gradually contracts back into the water injection channel, the movable sheet gradually rotates along the rotating shaft in the reverse direction under the action of the resilience force of the return elastic sheet, namely, the movable sheet is gradually folded and is hidden in the fixed cavity, and the movable sheet can be pulled out after being completely folded.
To sum up, the utility model has the characteristics of simple structure and fixed effectual.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic view of the structure at a in fig. 1.
The labels in the figures are: 1-cannula, 2-fixing component, 21-fixing card, 22-connecting part, 23-penetrating part, 231-air vent, 24-water injection channel, 25-fixing cavity, 26-rotating shaft, 27-movable sheet, 28-resilience sheet, 29-elastic capsule, 3-needle core, 31-observation side hole, 32-positioning ring and 4-injection guide tube.
Detailed Description
The following description is made with reference to the accompanying drawings and examples, but not to be construed as limiting the invention.
Example 1. An anti-drop perfusion needle is formed as shown in figures 1 and 2 and comprises a cannula 1, wherein the end part of the cannula 1 is connected with a fixing component 2, a needle core 3 is arranged in the cannula 1, and the tip part of the needle core 3 penetrates through the fixing component 2; the fixing component 2 comprises a fixing clamping piece 21, one side of the fixing clamping piece 21 is provided with a connecting part 22, the other side of the fixing clamping piece 21 is provided with a puncturing part 23, the inner wall of the fixing component 2 is also provided with a water injection channel 24, the inlet of the water injection channel 24 is arranged on the connecting part 22 and communicated with the injection guide pipe 4, the outlet of the water injection channel 24 is communicated with a fixing cavity 25 arranged on the side wall of the puncturing part 23, the fixing cavity 25 is connected with a movable piece 27 through a rotating shaft 26, the inner side of the movable piece 27 is provided with a rebound piece 28, the outlet close to the water injection channel 24 is also provided with an elastic bag body 29, and the open end of the elastic bag body 29 is communicated; the tip of the stylet 3 is inserted through the connecting part 22, the fixing card 21 and the puncturing part 23 in sequence.
The injection port of the injection guide tube 4 is externally connected with a single switch tee joint for injection, and the tee joint switch is closed after water injection so as to prevent liquid in the saccule from flowing back.
The needle core 3 in the sleeve 1 is also provided with a side observation hole 31. By observing the side hole 31, whether or not the perfusion needle is inserted into the blood vessel can be confirmed.
A positioning ring 32 is also provided on the outer wall of the needle core 3 inside the cannula 1. By arranging the positioning ring 32, the tip of the stylet 3 can be ensured to be coaxial with the cannula 1, and the puncture is more accurate.
The side wall of the puncturing part 23 is further provided with an air vent hole 231. The purpose of exhausting is achieved through the structure.
When the device is used, the tip end part of the stylet 3 and the puncturing part 23 of the fixing component 2 are inserted into an aorta, when the observation side hole 31 is observed to have blood flowing out, the insertion into the blood vessel is explained, the stylet 3 is withdrawn, then the physiological saline is injected into the water injection channel 24 through the injection hole of the injection guide tube 4, the elastic capsule body 29 gradually extends along the water injection channel 24 along with the injection of the physiological saline, the extended elastic capsule body 29 contacts one end of the movable sheet 27 and applies force to the movable sheet 27, the movable sheet 27 rotates along the rotating shaft 26 until the movable sheet 27 is parallel to the fixing clamping sheet 21, the movable sheet 27 and the fixing clamping sheet 21 form clamping on the blood vessel wall, the dropping of the perfusion needle is well prevented, and then the perfusion is performed; when the sleeve 1 is pulled out after the completion of filling, the physiological saline in the water injection channel 24 is led out from the injection guide tube 4, at the moment, the elastic capsule body 29 gradually contracts back into the water injection channel 24, the movable sheet 27 gradually rotates reversely along the rotating shaft 26 under the effect of the resilience force of the resilience sheet 28, namely, the movable sheet 27 is gradually folded, is hidden in the fixed cavity 25, and can be pulled out after the movable sheet 27 is completely folded.
Claims (5)
1. An anticreep formula perfusion needle which characterized in that: the needle cannula comprises a cannula (1), wherein the end part of the cannula (1) is connected with a fixing component (2), a needle core (3) is arranged in the cannula (1), and the tip part of the needle core (3) penetrates through the fixing component (2); the fixed assembly (2) comprises a fixed clamping piece (21), one side of the fixed clamping piece (21) is provided with a connecting part (22), the other side of the fixed clamping piece (21) is provided with a puncturing part (23), the inner wall of the fixed assembly (2) is also provided with a water injection channel (24), the inlet of the water injection channel (24) is arranged on the connecting part (22) and communicated with an injection guide pipe (4), the outlet of the water injection channel (24) is communicated with a fixed cavity (25) arranged on the side wall of the puncturing part (23), the fixed cavity (25) is connected with a movable piece (27) through a rotating shaft (26), the inner side of the movable piece (27) is provided with a rebound piece (28), the outlet close to the water injection channel (24) is also provided with an elastic bag body (29), and the open end of the elastic bag body (29) is communicated with the water injection channel (24; the tip end of the needle core (3) penetrates through the connecting part (22), the fixing clamping piece (21) and the penetrating part (23) in sequence.
2. The anti-drop irrigation needle according to claim 1, wherein: an observation side hole (31) is also arranged on the stylet (3) positioned in the sleeve (1).
3. The anti-drop irrigation needle according to claim 1 or 2, wherein: the outer wall of the needle core (3) positioned in the sleeve (1) is also provided with a positioning ring (32).
4. The anti-drop irrigation needle according to claim 1 or 2, wherein: the side wall of the puncturing part (23) is also provided with an air vent hole (231).
5. The anti-drop irrigation needle according to claim 1 or 2, wherein: the injection port of the injection guide pipe (4) is externally connected with a single switch tee joint for injection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820346237.9U CN211749926U (en) | 2018-03-14 | 2018-03-14 | Anti-drop fills needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820346237.9U CN211749926U (en) | 2018-03-14 | 2018-03-14 | Anti-drop fills needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211749926U true CN211749926U (en) | 2020-10-27 |
Family
ID=72907059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820346237.9U Active CN211749926U (en) | 2018-03-14 | 2018-03-14 | Anti-drop fills needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211749926U (en) |
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2018
- 2018-03-14 CN CN201820346237.9U patent/CN211749926U/en active Active
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