CN211883978U - Nerve blocking needle capable of achieving accurate needle insertion - Google Patents
Nerve blocking needle capable of achieving accurate needle insertion Download PDFInfo
- Publication number
- CN211883978U CN211883978U CN202020275126.0U CN202020275126U CN211883978U CN 211883978 U CN211883978 U CN 211883978U CN 202020275126 U CN202020275126 U CN 202020275126U CN 211883978 U CN211883978 U CN 211883978U
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- CN
- China
- Prior art keywords
- needle
- puncture
- shell
- screw rod
- medicine injection
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- Expired - Fee Related
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- 210000005036 nerve Anatomy 0.000 title claims abstract description 35
- 238000003780 insertion Methods 0.000 title claims abstract description 14
- 230000037431 insertion Effects 0.000 title claims abstract description 14
- 230000000903 blocking effect Effects 0.000 title description 2
- 238000002347 injection Methods 0.000 claims abstract description 50
- 239000007924 injection Substances 0.000 claims abstract description 50
- 239000003814 drug Substances 0.000 claims abstract description 35
- 230000000149 penetrating effect Effects 0.000 claims abstract description 5
- 230000001537 neural effect Effects 0.000 claims description 4
- 230000006872 improvement Effects 0.000 description 9
- 229940079593 drug Drugs 0.000 description 6
- 230000036407 pain Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 206010002091 Anaesthesia Diseases 0.000 description 2
- 230000037005 anaesthesia Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 208000028389 Nerve injury Diseases 0.000 description 1
- 230000003444 anaesthetic effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003589 local anesthetic agent Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008764 nerve damage Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Images
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model discloses a nerve block needle for accurate needle insertion, which comprises a puncture needle, wherein the puncture needle is hollow, the front end of the puncture needle is a puncture part, and the rear end of the puncture needle is connected with a tubular shell; the puncture needle is provided with a hollow medicine injection needle penetrating through the puncture needle, the front end of the medicine injection needle is provided with a medicine injection port, and the rear end of the medicine injection needle is connected with a catheter; a screw rod coaxial with the shell is arranged in the shell; the screw rod rotates to drive the sliding block to move axially along the shell; the injection needle is fixed on the sliding block. The puncture needle is utilized to carry out primary puncture for approaching the target nerve, and then the injection needle is accurately controlled to be close to the target nerve as much as possible in a precession mode, so that the aim of accurate needle insertion is fulfilled.
Description
Technical Field
The utility model relates to a neural needle that blocks, especially a neural needle that blocks that can accurate needle insertion.
Background
The continuous nerve block technology is that a catheter is precisely kept near a target nerve, and local anesthetic is injected near the target nerve through a catheter opening to achieve the purposes of anesthesia and pain treatment. The medical devices used in the continuous nerve block technology face two contradictory problems of safety and accuracy. The safety mainly means that the puncture needle can be carelessly punctured into the target nerve to cause nerve injury in the operation process, and the accuracy requires that the opening of the catheter is as close as possible to even contact the target nerve, so that the medicine can be favorably and accurately flowed onto the target nerve to play the medicine effect. The nerve block needle is a medical instrument designed by using the principle of continuous nerve block technology.
The existing nerve block needle comprises a puncture needle, the puncture needle is hollow, the far end of the puncture needle is provided with a medicine outlet, and the tail end of the puncture needle is connected with a catheter. After the puncture needle is used for puncturing the position near the target nerve, a continuous medicine feeding channel is formed through the medicine outlet and the catheter. The existing puncture of the nerve block needle mainly depends on ultrasonic wave guide and then an operator manually inserts the needle, and the accuracy depends on the experience and hand feeling of the operator.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a neural block needle of accurate needle insertion.
In order to solve the technical problems, the technical scheme of the utility model is to adopt a nerve block needle with accurate needle insertion, which comprises a puncture needle, wherein the puncture needle is hollow, the front end of the puncture needle is a puncture part, and the rear end of the puncture needle is connected with a tubular shell; the puncture needle is provided with a hollow medicine injection needle penetrating through the puncture needle, the front end of the medicine injection needle is provided with a medicine injection port, and the rear end of the medicine injection needle is connected with a catheter; a screw rod coaxial with the shell is arranged in the shell; the screw rod rotates to drive the sliding block to move axially along the shell; the injection needle is fixed on the sliding block. The principle of the utility model lies in: the puncture needle is utilized to carry out primary puncture for approaching the target nerve, and then the injection needle is accurately controlled to be close to the target nerve as much as possible in a precession mode, so that the aim of accurate needle insertion is fulfilled.
As an improvement, the screw rod further comprises a support plate arranged in the shell in the radial direction, and the front end of the screw rod is connected with the support plate. The backup pad supports the screw rod front end, the setting of the screw rod of being convenient for.
As a further improvement, the rear end of the screw rod is fixed on a knob which is clamped with the rear end of the shell. The knob is convenient for an operator to drive the screw rod to rotate, so that the injection needle is driven to be inserted.
As another further improvement, the screw rod is hollow, and the guide pipe penetrates through the screw rod and is connected with the injection needle. The slider and the knob should also be provided with corresponding through holes for the conduit to pass through, so that the conduit can pass through the rear end of the whole device, and the influence on the operation caused by the holes on the side wall is avoided.
As an improvement, the sliding block comprises a front section and a rear section which are respectively arranged at the front side and the rear side of the supporting plate, the injection needle is fixed on the front section, and the rear section is in threaded fit with the screw rod; the front section is connected with the rear section by a connecting rod penetrating through the supporting plate. The motion path of the sliding block can be increased, so that the adjustment range of the needle insertion is improved.
As an improvement, the inner wall of the shell is provided with an axial anti-rotation groove, and the sliding block is provided with an anti-rotation lug extending into the anti-rotation groove. So that the sliding block will not rotate when the screw rod is rotated.
As an improvement, the shell is provided with a transparent section and marked with scales. By observing the position of the slide block at the transparent section, the length of the medicine injection needle can be known.
As an improvement, the shell is provided with a grab handle which is convenient to hold. Is convenient to hold and insert the needle.
As an improvement, the puncture part of the puncture needle is an inclined plane. Has strong puncture force and can relieve puncture pain.
As an improvement, the drug injection opening is formed in the side wall of the front end of the drug injection needle, and the puncture part of the drug injection needle is an arc surface. The puncture part of the cambered surface effectively improves the safety.
The utility model discloses an useful part lies in:
1. the existing puncture needles have two types, one type of puncture needle has a larger diameter and the front end is an inclined plane, and the puncture needle has the advantages of good penetrability and capability of effectively relieving the pain of a patient. The defect is that the front end is too sharp, and the tissues such as nerves, blood vessels and the like are easy to be accidentally injured. The other type has the advantages that the diameter is thinner, the front end is blunt, the safety is high, and the defect is that the pain of a patient is strong when the puncture is performed with poor penetrability. The application combines the advantages of two puncture needles and abandons the disadvantages of the puncture needles. The puncture needle with strong penetrability is used for primary puncture to reach the position near the target nerve, and the injection needle with strong safety is used for further approaching the target nerve.
2. The injection needle is more accurate and easier to control through the precession type needle insertion, and the force and the length of the needle insertion are more controllable. The position of the injection needle can not be changed due to the elasticity of the tissue after the needle insertion.
3. Although the screw-in type needle insertion is adopted, the injection needle itself does not rotate. If the injection needle rotates during puncture, a stronger pain feeling can be generated, and the utility model discloses a rotatory knob impels the slider, and the slider and the injection needle do not rotate.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a cross-sectional view of the present invention.
The labels in the figure are: 1 puncture needle, 2 shells, 3 medicine injection needles, 4 grab handles, 5 catheters and 6 injectors; a transparent section 21, a screw 22, a rear section 23, an anti-rotation groove 24, an anti-rotation lug 25, a connecting rod 26, a front section 27, a supporting plate 28 and a knob 29; 31 a medicine injection port.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the specific embodiments.
As shown in fig. 1 and 2, the utility model comprises a puncture needle 1, wherein the puncture needle 1 is hollow, the front end of the puncture needle is a puncture part, and the rear end of the puncture needle is connected with a tubular shell 2; the puncture part of the puncture needle 1 is an inclined plane. The housing 2 is provided with a grip 4 for easy holding. The puncture needle also comprises a hollow medicine injection needle 3 which penetrates through the puncture needle 1, the front end of the medicine injection needle 3 is provided with a medicine injection port 31, and the rear end is connected with a catheter 5; specifically, the drug injection port 31 is opened on the side wall of the front end of the drug injection needle 3, and the puncturing part of the drug injection needle 3 is a cambered surface. A screw rod 22 coaxial with the shell body 1 is arranged in the shell body; the sliding block is in threaded fit with the screw 22 (the sliding block comprises a front section 27 and a rear section 23, which will be described in detail later), and the screw 22 rotates to drive the sliding block to move axially along the shell 1; the injection needle 3 is fixed on the sliding block. And a support plate 28 arranged in the shell 1 in the radial direction, wherein the front end of the screw rod 22 is connected with the support plate 28. The rear end of the screw 22 is fixed on a knob 29, and the knob 29 is clamped with the rear end of the shell, so that the knob 29 can rotate and cannot fall off. The screw rod 22 is hollow, and the guide pipe 5 penetrates through the screw rod 22 and is connected with the medicine injection needle 3. The slider and knob 29 should also be provided with corresponding through holes for the passage of the conduit 5, so that the conduit 5 can be passed through the rear end of the whole device and finally connected to a filling device, such as a syringe 6.
Specifically, the slide block comprises a front section 27 and a rear section 23 which are respectively arranged at the front side and the rear side of a supporting plate 28, the injection needle 3 is fixed on the front section 27, and the rear section 23 is in threaded fit with the screw 22; the front section 27 and the rear section 23 are connected by a connecting rod 26 that passes through a support plate 28.
An axial anti-rotation groove 24 is formed in the inner wall of the shell 1, and an anti-rotation lug 25 extending into the anti-rotation groove 24 is arranged on the sliding block (the rear section 23). It is foreseeable that the mode of preventing changeing is diversified, for example the slider adopts the form of square column, and no longer repeated in this application.
The shell 1 is provided with a transparent section 21 and marked with scales.
When in use, the ultrasonic wave can be adopted for guiding. The injection needle 3 is first retracted into the puncture needle 1 by turning the knob 29. The operator holds the grip 4 and punctures the needle 1 with a sharp point so that the tip of the needle 1 reaches the vicinity of the target nerve. Then the knob 29 is turned to drive the screw 22 to rotate through the knob 29, and the slide block which is in threaded fit with the screw 22 is provided with an anti-rotation mechanism, so that the slide block can only slide back and forth along the screw 22 and cannot rotate. So that the injection needle 3 fixed on the slider extends out of the front opening of the puncture needle 1 and does not rotate. After the injection port 31 at the front end of the injection needle 3 approaches the target nerve, the injector 6 is used to inject the anesthetic into the target nerve through the catheter 5 for the purpose of anesthesia and pain treatment.
The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and enhancements can be made without departing from the spirit and scope of the invention, and such modifications and enhancements are intended to be within the scope of the invention.
Claims (10)
1. The utility model provides a neural needle that blocks of accurate needle insertion, includes pjncture needle, its characterized in that: the puncture needle is hollow, the front end of the puncture needle is a puncture part, and the rear end of the puncture needle is connected with the cylindrical shell; the puncture needle is provided with a hollow medicine injection needle penetrating through the puncture needle, the front end of the medicine injection needle is provided with a medicine injection port, and the rear end of the medicine injection needle is connected with a catheter; a screw rod coaxial with the shell is arranged in the shell; the screw rod rotates to drive the sliding block to move axially along the shell; the injection needle is fixed on the sliding block.
2. The nerve block needle of claim 1, wherein: the screw rod is characterized by further comprising a supporting plate arranged in the shell in the radial direction, and the front end of the screw rod is connected with the supporting plate.
3. The nerve block needle of claim 2, wherein: the rear end of the screw rod is fixed on the knob, and the knob is clamped with the rear end of the shell.
4. The nerve block needle of claim 3, wherein: the screw rod is hollow, and the guide pipe penetrates through the screw rod and is connected with the medicine injection needle.
5. The nerve block needle of claim 2, wherein: the sliding block comprises a front section and a rear section which are respectively arranged at the front side and the rear side of the supporting plate, the medicine injection needle is fixed on the front section, and the rear section is in threaded fit with the screw rod; the front section is connected with the rear section by a connecting rod penetrating through the supporting plate.
6. The nerve block needle of claim 1, wherein: the inner wall of the shell is provided with an axial anti-rotation groove, and the sliding block is provided with an anti-rotation lug extending into the anti-rotation groove.
7. The nerve block needle of claim 1, wherein: the shell is provided with a transparent section and marked with scales.
8. The nerve block needle of claim 1, wherein: the shell is provided with a grab handle convenient to hold.
9. The nerve block needle of claim 1, wherein: the puncture part of the puncture needle is an inclined plane.
10. The nerve block needle of claim 1, wherein: the medicine injection opening is formed in the side wall of the front end of the medicine injection needle, and the puncture part of the medicine injection needle is an arc surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020275126.0U CN211883978U (en) | 2020-03-06 | 2020-03-06 | Nerve blocking needle capable of achieving accurate needle insertion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020275126.0U CN211883978U (en) | 2020-03-06 | 2020-03-06 | Nerve blocking needle capable of achieving accurate needle insertion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211883978U true CN211883978U (en) | 2020-11-10 |
Family
ID=73300744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020275126.0U Expired - Fee Related CN211883978U (en) | 2020-03-06 | 2020-03-06 | Nerve blocking needle capable of achieving accurate needle insertion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211883978U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022165967A1 (en) * | 2021-02-03 | 2022-08-11 | 中南大学湘雅二医院 | Continuous nerve block catheter conveying system and method |
-
2020
- 2020-03-06 CN CN202020275126.0U patent/CN211883978U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022165967A1 (en) * | 2021-02-03 | 2022-08-11 | 中南大学湘雅二医院 | Continuous nerve block catheter conveying system and method |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201110 |