CN211156132U - Anti-slip puncture needle - Google Patents
Anti-slip puncture needle Download PDFInfo
- Publication number
- CN211156132U CN211156132U CN201921769623.XU CN201921769623U CN211156132U CN 211156132 U CN211156132 U CN 211156132U CN 201921769623 U CN201921769623 U CN 201921769623U CN 211156132 U CN211156132 U CN 211156132U
- Authority
- CN
- China
- Prior art keywords
- hose
- needle
- steel needle
- cavity
- piston
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model relates to the field of medical equipment, a antiskid pjncture needle that falls is specifically disclosed. The hose is fixed on the connecting part, the hose is coated outside the steel needle, and the hose is connected with the steel needle in a sliding manner; the connecting part is internally provided with a cavity, a piston is arranged in the cavity in a sliding sealing mode, the steel needle penetrates through the side wall of the cavity and is fixed with the piston, and the piston is provided with a connecting channel communicated with the inner cavity of the steel needle. The utility model provides a pjncture needle is provided with the hose to avoid the steel needle to puncture blood vessel and the steel needle is deviate from the central vein when pulling out the syringe.
Description
Technical Field
The utility model relates to the field of medical equipment, a antiskid pjncture needle that falls is specifically disclosed.
Background
A puncture needle is a common medical device used for puncturing organs, tissues or for injecting drugs. The central venous puncture needle is used for puncturing a central vein and is mainly used for central venous transfusion or interventional operation. The central venous puncture needle comprises a head and a steel needle, the head and an injector are required to be connected when the traditional central venous puncture needle is used, the steel needle is tubular, after the steel needle is punctured into a human body, blood enters the injector through the steel needle, and a doctor can conveniently judge whether the steel needle is punctured into a central vein. After the steel needle is inserted into the central vein, the injector needs to be detached, the guide wire is inserted into the central vein from the interior of the steel needle, then the steel needle is taken out, the catheter is sleeved outside the guide wire, and the catheter is inserted into the central vein along the guide wire to establish a vein access.
When the traditional central venous puncture needle is taken down, one hand is needed to press the puncture needle, and the other hand is needed to pull the syringe away from the puncture needle. The connection between the head of part of the puncture needle and the injector is tight, and the injector can be pulled out only with great force, so that the operation easily causes that the hand pressing the puncture needle pushes the puncture needle into the human body when the injector is pulled out, and the puncture needle is too long to puncture the central venous blood vessel. And the steel needle can shake when the injector is pulled out, and the problem that the steel needle is separated from the central vein can also occur.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a set up antiskid pjncture needle that falls of hose to avoid the steel needle to puncture blood vessel and the steel needle is deviate from the central vein when pulling out the syringe.
In order to achieve the above purpose, the technical scheme of the utility model is that: an anti-slipping puncture needle comprises a steel needle and a connecting part, wherein a hose is fixed on the connecting part, the hose is coated outside the steel needle, and the hose is connected with the steel needle in a sliding manner; the connecting part is internally provided with a cavity, a piston is arranged in the cavity in a sliding sealing mode, the steel needle penetrates through the side wall of the cavity and is fixed with the piston, and the piston is provided with a connecting channel communicated with the inner cavity of the steel needle.
The beneficial effect of this scheme does:
1. steel needle and hose sliding connection in this scheme, after the steel needle pierces the blood vessel, the hose gets into the blood vessel along with the steel needle, then the piston that outwards slides can make the steel needle outwards slide to in making the steel needle get into the hose, because the tip that the connecting portion were kept away from to the hose does not set up most advanced, so the hose can not puncture the vascular wall. And when the steel needle enters the hose, the hose can be continuously pushed into the blood vessel, and finally the length of the hose extending into the blood vessel can be longer, so that the hose is prevented from falling out of the blood vessel when the injector is disassembled.
2. The steel needle can be located in the hose when storing, avoids the doctor to be wounded by the pointed end of steel needle by mistake when taking the pjncture needle.
Furthermore, a push rod is fixed on one side of the piston, which is far away from the steel needle, and a guide channel communicated with the connecting channel is arranged in the push rod.
The beneficial effect of this scheme does: in use, the needle of the syringe may extend through the guide passage into the connecting passage. When the puncture needle punctures, the puncture needle is in a horizontal state or a connection part is higher than the inclination of the steel needle or even in a vertical state, and the syringe is not easy to fall off from the puncture needle because the needle head of the syringe is positioned in the guide channel, thereby being convenient for the operation of doctors.
Furthermore, the diameter of the guide channel is 0.3-0.6 mm.
The beneficial effect of this scheme does: the internal diameter of syringe needle that the hospital used is 0.26mm or 0.51mm mostly, and the diameter of guide channel among this technical scheme is slightly more than the diameter of syringe needle, and the space that can rock after the syringe needle passes guide channel is less, further makes things convenient for doctor's operation.
Furthermore, one end of the push rod, which is far away from the piston, is fixed with a limiting part with the diameter larger than or equal to that of the cavity, one side of the limiting part, which is far away from the push rod, is provided with a clamping groove clamped with the syringe, and the guide channel is communicated with the clamping groove.
The beneficial effect of this scheme does: after the needle head of the injector passes through the guide channel, one end of the injector close to the needle head is clamped with the clamping groove, and the injector is further prevented from shaking.
Furthermore, a blocking piece used for closing the connecting channel is fixed in the connecting channel, and the strength of the blocking piece is smaller than that of the syringe needle.
The beneficial effect of this scheme does: the separation blade can be punctureed to the syringe needle of syringe in this scheme, and the separation blade still can seal connecting channel by the puncture part to guarantee that the blood that gets into in the steel needle only can get into the syringe through the syringe needle of syringe, avoid blood to reveal from between connecting channel and the syringe needle of syringe.
Further, the separation blade is medical rubber buffer.
The beneficial effect of this scheme does: the medical rubber plug has larger elasticity and smaller strength, can be easily punctured by a steel needle of the syringe, and is convenient for a doctor to operate.
Furthermore, the steel needle is 1-2 cm longer than the hose.
The beneficial effect of this scheme does: the length of the steel needle is far longer than that of the hose, so that the steel needle can extend out of the hose.
Further, the length of the cavity is 3-5 cm.
The beneficial effect of this scheme does: the length difference between the steel needle and the hose in the scheme is smaller than the stroke of the piston, and the steel needle can slide into the hose.
Furthermore, the one end that the connecting portion were kept away from to the hose is equipped with the scale mark that shows hose length, and the zero scale of scale mark is located the one end that the connecting portion were kept away from to the hose.
The beneficial effect of this scheme does: can clearly audio-visually see out the length that the hose got into the human body through the scale mark, avoid the artificial estimation to cause the error, guarantee that the length that the hose got into the human body can reach the length that is difficult to deviate from, further avoid the hose to deviate from.
Furthermore, the end part of the hose far away from the connecting part is in smooth transition with the side wall of the hose.
The beneficial effect of this scheme does: the edges and corners on the hose are fewer, and the blood vessel is less prone to being damaged.
Drawings
Fig. 1 is a front longitudinal sectional view of embodiment 1 and embodiment 2 of the present invention;
FIG. 2 is a schematic view of the needle of FIG. 1 being slid into the tube;
fig. 3 is a schematic view showing a state in which the puncture needle of fig. 2 is engaged with the syringe.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the device comprises a connecting part 1, a cavity 11, a hose 2, a steel needle 3, a piston 4, a connecting channel 41, a baffle plate 42, a push rod 5, a guide channel 51, a limiting part 6, a clamping groove 61 and an injector 7.
Example 1
An anti-slipping puncture needle is shown in figures 1, 2 and 3 and comprises a steel needle 3, a hose 2 and a connecting part 1, wherein the hose 2 is coated outside the steel needle 3, the steel needle 3 in the embodiment is tubular, the left end of the steel needle 3 is a tip and is used for puncturing a human body, and the steel needle 3 is longer than the hose 2. The right end of the hose 2 is connected with the connecting part 1 in an adhesive manner, and the end part of the left end of the hose 2 is in smooth transition with the side wall of the hose 2; the left part of the hose 2 is also provided with a scale mark for indicating the length of the hose 2, and the zero scale mark is positioned at the leftmost end of the hose 2.
The connecting portion 1 is internally provided with a cavity 11 with an opening facing to the right, a piston 4 is arranged in the cavity 11 in a sliding and sealing mode, the piston 4 can slide out of the cavity 11 towards the right, the piston 4 in the embodiment is the same as the piston of the existing injector 7, and the description is omitted in the embodiment. 3 right-hand members of steel needle run through 1 left end of connecting portion and splice on piston 4 left wall, and when piston 4 was located cavity 11 right-hand members, 3 left ends of steel needle were located hose 2. The piston 4 is provided with a connecting channel 41 communicated with the inner cavity of the steel needle 3, a baffle plate 42 is glued in the connecting channel 41 in the embodiment, and the strength of the baffle plate 42 is smaller than that of the needle head of the syringe 7, specifically, the baffle plate 42 in the embodiment is a medical rubber plug, and the baffle plate 42 can be easily punctured by the needle head of the syringe 7.
A push rod 5 is integrally formed on the right wall of the piston 4, a limiting part 6 is integrally formed at the right end of the push rod 5, and a guide channel 51 communicated with the connecting channel 41 is arranged in the push rod 5; the diameter of the limiting part 6 is larger than that of the cavity 11, and the sum of the thickness of the piston 4 and the length of the push rod 5 is equal to that of the cavity 11. The right wall of the limiting part 6 is provided with a clamping groove 61 with an opening facing right, and the right end of the guide channel 51 is communicated with the clamping groove 61. The diameter of the clamping groove 61 in this embodiment is slightly smaller than the outer diameter of the syringe 7, when the needle of the syringe 7 passes through the guide channel 51, the syringe 7 is fixed by using an expansion mode, and the clamping groove 61 is clamped with the left end of the syringe 7. During the concrete implementation, the diameter of draw-in groove 61 can also be slightly greater than the diameter of syringe 7, splices annular sheet rubber at draw-in groove 61 right-hand member simultaneously, makes the sheet rubber take place deformation when syringe 7 gets into draw-in groove 61 to chucking syringe 7.
The specific operation process of the puncture needle in the embodiment is as follows:
before puncture, the needle head of the injector 7 penetrates through the guide channel 51 to penetrate into the connecting channel 41 manually, the needle head of the injector 7 penetrates through the blocking piece 42, then the injector 7 slides leftwards relative to the connecting part 1, the piston 4 is pushed to the left end of the cavity 11, the left end of the steel needle 3 extends out of the left end of the hose 2, then the steel needle 3 penetrates into a central venous blood vessel, the hose 2 enters the central venous blood vessel along with the steel needle 3, and in the penetrating process, blood in the blood vessel enters the injector 7, so that a doctor can conveniently judge whether the steel needle accurately penetrates into the central venous blood vessel according to the blood.
After the steel needle 3 pierces the central venous blood vessel, stop to continue to pierce the steel needle 3 in the human body, then hold the hose 2 left part on one hand, the other hand slides spacing portion 6 to the right end of cavity 11 with hose 2 relatively, makes steel needle 3 get into in the hose 2, then the manual work continues to push 1 ~ 3cm with hose 2 to the blood vessel, has steel needle 3 left end still to be located the hose 2 left part this moment, supports hose 2 left part, guarantees that hose 2 can insert in the blood vessel easily. The hose 2 further extends into the blood vessel, so the hose 2 is not easy to fall off from the blood vessel when the steel needle 3 is pulled out, and the left end of the hose 2 is smoothly transited with the side wall of the hose 2, so the left end of the hose 2 is not easy to stab and puncture the blood vessel.
When the steel needle 3 needs to be pulled out, the left end of the hose 2 is held by one hand, the limiting part 6 slides rightwards relative to the connecting part 1 by the other hand, the piston 4 can slide out of the cavity 11, so that the steel needle 3 slides out of the hose 2, when the guide wire needs to be inserted, the guide wire enters the blood vessel from the hose 2 through the cavity 11, the subsequent operation is the same as the conventional operation at present, and the description is omitted in the embodiment.
Example 2
Based on embodiment 1, as shown in fig. 1 and fig. 2, in this embodiment, the length of the steel needle 3 is 1 to 2cm greater than the length of the hose 2, the length of the cavity 11 is 3 to 5cm, specifically, the length of the cavity 11 in this embodiment is 5cm, the length of the steel needle 3 is 1cm greater than the length of the hose 2, the thickness of the piston 4 is 0.5cm, and the diameter of the guide channel 51 is 0.3 to 0.6mm, in specific implementation, the diameter of the guide channel 51 is greater than the outer diameter of the needle of the common syringe 7, the diameter of the guide channel 51 in this embodiment is 0.6mm, and is generally greater than the outer diameter of the needle of the common syringe 7, and after the needle of the syringe 7 passes through the guide channel 51, the syringe 7 does not shake at a large angle.
The operation method of the puncture needle in the embodiment is the same as that of the puncture needle in the embodiment 1, the length difference between the steel needle 3 and the hose 2 is small, the left end of the steel needle 3 can slide out of the hose 2, and the steel needle 3 can slide into the hose 2 only by sliding a small distance rightwards after penetrating into a blood vessel.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, without departing from the concept of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the present invention and the practicability of the patent. The technology, shape and construction parts which are not described in the present invention are all known technology.
Claims (10)
1. The utility model provides an antiskid pjncture needle that falls, includes steel needle and connecting portion, its characterized in that: a hose is fixed on the connecting part, the hose is covered outside the steel needle, and the hose is connected with the steel needle in a sliding manner; the connecting part is internally provided with a cavity, a piston is arranged in the cavity in a sliding sealing mode, the steel needle penetrates through the side wall of the cavity and is fixed with the piston, and a connecting channel communicated with the inner cavity of the steel needle is arranged on the piston.
2. The anti-drop puncture needle according to claim 1, characterized in that: and a push rod is fixed on one side of the piston, which is far away from the steel needle, and a guide channel communicated with the connecting channel is arranged in the push rod.
3. The anti-drop puncture needle according to claim 2, characterized in that: the diameter of the guide channel is 0.3-0.6 mm.
4. The anti-drop puncture needle according to claim 2, characterized in that: one end of the push rod, far away from the piston, is fixed with a limiting part with the diameter larger than or equal to that of the cavity, one side, far away from the push rod, of the limiting part is provided with a clamping groove clamped with the syringe, and the guide channel is communicated with the clamping groove.
5. The anti-drop puncture needle according to claim 1, characterized in that: a blocking piece used for closing the connecting channel is fixed in the connecting channel, and the strength of the blocking piece is smaller than that of the syringe needle.
6. The anti-drop puncture needle according to claim 5, wherein: the separation blade is medical rubber buffer.
7. The anti-drop puncture needle according to claim 1, characterized in that: the steel needle is 1-2 cm longer than the hose.
8. The anti-drop puncture needle according to claim 7, wherein: the length of the cavity is 3-5 cm.
9. The anti-drop puncture needle according to claim 1, characterized in that: the hose is kept away from the one end of connecting portion and is equipped with the scale mark that shows hose length, the zero scale of scale mark is located the one end that the connecting portion were kept away from to the hose.
10. The anti-skid lancet of claim 9, wherein: the end part of the hose far away from the connecting part is in smooth transition with the side wall of the hose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921769623.XU CN211156132U (en) | 2019-10-21 | 2019-10-21 | Anti-slip puncture needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921769623.XU CN211156132U (en) | 2019-10-21 | 2019-10-21 | Anti-slip puncture needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211156132U true CN211156132U (en) | 2020-08-04 |
Family
ID=71813873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921769623.XU Expired - Fee Related CN211156132U (en) | 2019-10-21 | 2019-10-21 | Anti-slip puncture needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211156132U (en) |
-
2019
- 2019-10-21 CN CN201921769623.XU patent/CN211156132U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB2415633A (en) | A cannula introducing device | |
| CN203169162U (en) | One-time artery difficult puncture needle | |
| CN107440769B (en) | Puncture device for thoracic surgery | |
| CN211156132U (en) | Anti-slip puncture needle | |
| CN211066658U (en) | Negative pressure syringe | |
| WO2022156747A1 (en) | Deep vein puncture assembly and deep vein puncture needle kit | |
| CN213189969U (en) | Cardiovascular internal medicine pjncture needle | |
| CN211432882U (en) | Improved central venous catheter puncture needle | |
| CN219613871U (en) | Multi-joint blood taking needle | |
| CN209122251U (en) | Blood taking needle | |
| CN110368070B (en) | Blood pressure dynamic guide core puncture trocar | |
| CN215017511U (en) | Indwelling blood taking needle | |
| CN201602778U (en) | Bonded vein blood taking lancet | |
| CN207444953U (en) | A kind of anti-rebound needle holder | |
| CN213047195U (en) | Tumor puncture guiding device | |
| CN215305911U (en) | Blood sample taking needle | |
| CN109875571A (en) | Special arterial blood gas collector for children | |
| CN200984186Y (en) | Blood taking needle | |
| CN219251221U (en) | Integrated safety intravenous needle | |
| CN209789976U (en) | neurology artery trocar | |
| CN215194513U (en) | Indwelling needle assembly | |
| CN219251208U (en) | Needle-puncture-preventing venous indwelling needle with wings | |
| CN221013413U (en) | Novel arterial puncture needle | |
| CN203017040U (en) | Bayonet type central venipuncture injection syringe | |
| CN217960253U (en) | Anesthesia positioning puncture fixer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200804 Termination date: 20211021 |