CN210990788U - Guide needle with locking function for assisting puncture of lumbar anesthesia needle - Google Patents
Guide needle with locking function for assisting puncture of lumbar anesthesia needle Download PDFInfo
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- CN210990788U CN210990788U CN201921110391.7U CN201921110391U CN210990788U CN 210990788 U CN210990788 U CN 210990788U CN 201921110391 U CN201921110391 U CN 201921110391U CN 210990788 U CN210990788 U CN 210990788U
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- lumbar anesthesia
- puncture
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Abstract
The utility model discloses a guide needle with locking function for assisting puncture of lumbar anesthesia needle, which comprises a needle head body and a guide cap fixedly connected with the tail end of the needle head body, wherein the guide cap is provided with a guide hole capable of smoothly guiding the penetrated lumbar anesthesia needle into the needle head body, the front end of the guide hole is formed with a conical guide surface, and the needle head body is carved with scale marks; a locking block for locking and fixing the lumbar anesthesia needle is arranged in the guide hole, and the locking block comprises a semicircular fixed locking block fixed in the guide hole and a semicircular movable locking block movably positioned in the guide hole and matched with the fixed locking block to clamp and lock the lumbar anesthesia needle in a downward pressing mode; radial spiral wears to be equipped with and is used for driving the locking screw that removes the locking piece and reciprocate on the guide cap, and the bottom of locking screw is connected with removing the locking piece. The utility model relates to a rationally, easy and simple to handle, can prevent the back roll-off of waist fiber crops needle puncture, furthest improves the success rate of puncture.
Description
Technical Field
The utility model relates to a design technique of guide needle, especially a guide needle of supplementary waist fiber crops needle puncture with locking function.
Background
Lumbar anesthesia (spinal anesthesia) is short for subarachnoid anesthesia (subarachnoid anesthesia) and spinal anesthesia, i.e. local anesthetic is injected into subarachnoid space through lumbar intervertebral space to block the conduction function of partial spinal nerves to cause anesthesia of corresponding innervated areas. At present, the lumbar anesthesia needle used clinically is very thin and soft, and if the lumbar anesthesia needle is directly used for puncture, the lumbar anesthesia needle is easy to bend and deform, so that the puncture success rate is influenced.
A guide needle for assisting the puncture of a lumbar anesthesia needle is developed in the prior art. When the guide needle is used, the guide needle is firstly penetrated into the skin and muscle of a patient to a certain depth to serve as a guide function, and then the lumbar anesthesia needle penetrates through the guide needle to perform lumbar anesthesia puncture operation. As the lumbar anesthesia needle passes through the guide needle, the lumbar anesthesia needle can directly puncture the interspinous ligament, the ligamentum flavum and the subarachnoid space by the guide needle skipping over the thick skin layer and the anterior spinal ligament. The guide needle effectively prevents the deformation and bending of the lumbar anesthesia needle.
However, in clinical application, it is found that when the lumbar anesthesia needle is successfully punctured, a certain movable gap exists between the guide needle and the lumbar anesthesia needle, and the needle tip of the lumbar anesthesia needle easily slides out of the subarachnoid space again due to carelessness, so that the lumbar anesthesia fails or incomplete blockage brings unnecessary pain and burden to a patient. Therefore, the technical problem that the lumbar anesthesia needle slips out needs to be overcome, so that the success rate of puncture is further improved.
Disclosure of Invention
The utility model aims to solve the technical problem that to above-mentioned prior art current situation, and provide simple structure, reasonable in design, can prevent the guide needle of supplementary lumbar anesthesia needle puncture with locking function of roll-off behind the lumbar anesthesia needle puncture.
The utility model provides a technical scheme that above-mentioned technical problem adopted does:
a guide needle with a locking function for assisting puncture of a lumbar anesthesia needle comprises a needle head body positioned at the front end and a guide cap fixedly connected to the tail end of the needle head body, wherein a guide hole capable of smoothly guiding the inserted lumbar anesthesia needle into the needle head body is processed on the guide cap, a conical guide-in surface is formed at the front end of the guide hole, and scale marks for displaying the puncture depth are carved on the needle head body; a locking block for locking and fixing the lumbar anesthesia needle is arranged in the guide hole, and the locking block comprises a semicircular fixed locking block fixed in the guide hole and a semicircular movable locking block movably positioned in the guide hole and matched with the fixed locking block to clamp and lock the lumbar anesthesia needle in a downward pressing mode; radial spiral wears to be equipped with and is used for driving the locking screw that removes the locking piece and reciprocate on the guide cap, and the bottom of locking screw is connected with removing the locking piece.
In order to optimize the technical scheme, the specific measures adopted further comprise:
the upper end of the locking screw is fixedly provided with a screw knob which is convenient for manually rotating the locking screw, and the outer peripheral surface of the screw knob is formed with anti-skid stripes.
The outer peripheral surface of the guide cap is integrally formed with a nut projection, and an internal thread matched with the external thread on the locking screw is processed in the nut projection.
The bottom end of the locking screw is formed with a T-shaped head, and the movable locking block is formed with a T-shaped connecting groove connected with the T-shaped head of the locking screw in a movable anti-falling mode.
Compared with the prior art, the utility model discloses add fixed locking piece and remove the locking piece in the bullport of guide cap to the spiral is installed and is driven the locking screw who removes the locking piece and reciprocate on the guide cap, makes the utility model discloses a guide needle can utilize the locking piece to press from both sides waist fiber crops needle fastening and decide after waist fiber crops needle puncture is accomplished, guarantees that waist fiber crops needle can not guide the needle relatively and remove, thereby can avoid the risk of the waist fiber crops needle puncture completion back roll-off once more.
The utility model relates to a rationally, easy and simple to handle, can prevent the back roll-off of waist fiber crops needle puncture, furthest improves the success rate of puncture.
Drawings
FIG. 1 is a schematic view of the status and structure of the utility model with a lumbar anesthesia needle;
FIG. 2 is a schematic view of the state of the lumbar anesthesia needle to be locked;
FIG. 3 is a cross-sectional structural view of the guide cap of FIG. 1;
FIG. 4 is a cross-sectional block diagram of the moving latch block of FIG. 1;
fig. 5 is a schematic structural view of the locking screw of fig. 1.
Detailed Description
Embodiments of the present invention are described in further detail below with reference to the accompanying drawings.
Wherein the reference numerals are: the needle head body 1, the guide cap 2, the guide hole 2a, the conical guide-in surface 2b, the nut bump 21, the fixed locking block 31, the movable locking block 32, the T-shaped connecting groove 32a, the locking screw 4, the T-shaped head 41, the screw knob 5, the anti-skid stripe 5a and the lumbar anesthesia needle 6.
Fig. 1 to 5 are schematic views of the structure and the operation state thereof according to the present invention. As shown in the figure, the utility model discloses a supplementary lumbar anesthesia needle puncture guide needle with locking function, this guide needle including the syringe needle body 1 that is located the front end and fixed connection at the guide cap 2 of this syringe needle body 1 tail end, the syringe needle end of the syringe needle body 1 adopts the shape of general medical syringe needle, and guide cap 2 can adopt the medical PVC material of stereoplasm to make, and its appearance is like cylindrical. A guide hole 2a is axially processed in the guide cap 2, and the guide hole 2a is coaxially communicated with a needle hole of the needle body 1. The diameter of the guide hole 2a is larger than that of the needle hole of the needle head body 1, so that the passing of the lumbar anesthesia needle 6 can be conveniently guided. The guide hole 2a functions to smoothly guide the inserted lumbar anesthesia needle 6 into the needle hole of the needle head body 1.
As can be seen from fig. 3, the front end of the guide hole 2a is formed with a tapered introduction surface 2b, and the tapered introduction surface 2b can more smoothly guide the lumbar anesthesia needle 6 into the needle head body 1. The needle head body 1 is engraved with scale lines for displaying the depth of the guide needle penetrating into the human body. Before the lumbar anesthesia needle 6 is punctured, the guide needle is firstly used for puncturing the skin and muscle of a patient to a certain depth, and the reference comparison is carried out on the depth of the lumbar anesthesia needle 6 according to the length of the exposed skin of the guide needle by reading the scale mark on the needle head body 1.
The utility model discloses an innovation point lies in, is equipped with the locking piece in bullport 2a, and the locking piece is used for the fixed waist fiber crops needle 6 of locking after 6 punctures of waist fiber crops needle are accomplished to prevent 6 strings of waist fiber crops needle, cause the waist fiber crops failure. The locking piece includes a semicircular fixed locking piece 31 and a semicircular movable locking piece 32, and the movable locking piece 32 and the fixed locking piece 31 are correspondingly disposed in the guide hole 2a up and down. The fixed locking block 31 is fixed in the guide hole 2a, the movable locking block 32 can move up and down, the movable locking block 32 is matched with the fixed locking block 31 in an upward pressing mode, and the lumbar anesthesia needle 6 which is arranged between the movable locking block 32 and the fixed locking block 31 in a penetrating mode is clamped, locked and fixed.
The radial spiral on the guide cap 2 is worn to be equipped with and is used for driving the locking screw 4 that removes locking piece 32 and reciprocate, and the bottom of locking screw 4 is connected with removing locking piece 32. The locking screw 4 rotates clockwise to push the movable locking block 32 to move downwards to lock and fix the lumbar anesthesia needle 6, and the locking screw 4 rotates anticlockwise to pull the movable locking block 32 to move upwards to enable the lumbar anesthesia needle 6 to be in a movable state.
In the embodiment, a screw knob 5 which facilitates manual rotation of the locking screw 4 is fixedly mounted at the upper end of the locking screw 4, and anti-slip stripes 5a are formed on the outer circumferential surface of the screw knob 5. The anti-slip strips 5a are provided to increase the friction force of the screw knob 5 in contact with the hand.
In the embodiment, the nut projection 21 is integrally formed on the outer peripheral surface of the guide cap 2, the nut projection 21 is also cylindrical, and the nut projection 21 is through-processed with a threaded hole along the axis, and the threaded hole has an internal thread matching with the external thread on the locking screw 4.
In the embodiment, a T-shaped head 41 is formed at the bottom end of the locking screw 4, and a T-shaped connecting groove 32a connected with the T-shaped head 41 of the locking screw 4 in a movable and anti-disengaging manner is formed on the movable locking block 32. The utility model discloses a remove locking piece 32 and locking screw 4 and utilize T shape spread groove 32a and T shape head 41 cooperation to be connected, enable locking screw 4 relative movement locking piece 32 on the one hand and rotate, locking screw 4's rotation just can not drive like this and remove locking piece 32 and rotate, and on the other hand also the anti-disengaging structure that can utilize T shape drives and removes locking piece 32 rebound.
The utility model discloses when using, use the syringe needle body 1 to pierce patient's skin and certain degree of depth of muscle earlier as the guide effect, then make waist numb needle 6 wear out through guide cap 2, syringe needle body 1 again and carry out waist numb puncture operation. After the puncture is finished, the screw knob 5 is manually rotated clockwise, the locking screw 4 is driven to push the movable locking block 32 to move downwards to be matched with the fixed locking block 31 to clamp, lock and fix the lumbar anesthesia needle 6. After the lumbar anesthesia is finished, the screw knob 5 is manually rotated anticlockwise, the locking screw 4 is driven to pull the movable locking block 32 to move upwards, and the lumbar anesthesia needle 6 is loosened.
Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection.
Claims (4)
1. A guide needle with a locking function and used for assisting puncture of a lumbar anesthesia needle comprises a needle head body (1) positioned at the front end and a guide cap (2) fixedly connected to the tail end of the needle head body (1), wherein a guide hole (2a) capable of smoothly guiding a penetrated lumbar anesthesia needle (6) into the needle head body (1) is processed in the guide cap (2), a conical guide-in surface (2b) is formed at the front end of the guide hole (2a), and scale lines used for displaying the puncture depth are engraved on the needle head body (1); the method is characterized in that: the guide hole (2a) is internally provided with a locking block for locking and fixing the lumbar anesthesia needle (6), and the locking block comprises a semicircular fixed locking block (31) fixed in the guide hole (2a) and a semicircular movable locking block (32) movably positioned in the guide hole (2a) and matched with the fixed locking block (31) to clamp and lock the lumbar anesthesia needle (6) in a downward pressing mode; the guide cap (2) on radial spiral wear to be equipped with and be used for driving locking screw (4) that remove locking piece (32) and reciprocate, the bottom of locking screw (4) be connected with removal locking piece (32).
2. The guiding needle with the locking function for assisting the puncture of the lumbar anesthesia needle as claimed in claim 1, wherein: the upper end fixed mounting of locking screw (4) have screw rod knob (5) of convenient manual rotatory locking screw (4), the outer peripheral face of screw rod knob (5) on shaping anti-skidding stripe (5 a).
3. The guiding needle with the locking function for assisting the puncture of the lumbar anesthesia needle as claimed in claim 2, wherein: the outer peripheral surface of the guide cap (2) is integrally formed with a nut projection (21), and an internal thread matched with the external thread on the locking screw (4) is machined in the nut projection (21).
4. The guiding needle with the locking function for assisting the puncture of the lumbar anesthesia needle as claimed in claim 3, wherein: the bottom end of the locking screw (4) is formed with a T-shaped head (41), and the movable locking block (32) is formed with a T-shaped connecting groove (32a) which is movably connected with the T-shaped head (41) of the locking screw (4) in a falling-off prevention manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921110391.7U CN210990788U (en) | 2019-07-16 | 2019-07-16 | Guide needle with locking function for assisting puncture of lumbar anesthesia needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921110391.7U CN210990788U (en) | 2019-07-16 | 2019-07-16 | Guide needle with locking function for assisting puncture of lumbar anesthesia needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210990788U true CN210990788U (en) | 2020-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921110391.7U Active CN210990788U (en) | 2019-07-16 | 2019-07-16 | Guide needle with locking function for assisting puncture of lumbar anesthesia needle |
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| CN (1) | CN210990788U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116549762A (en) * | 2023-07-10 | 2023-08-08 | 北京悦唯医疗科技有限责任公司 | Left ventricle auxiliary device |
-
2019
- 2019-07-16 CN CN201921110391.7U patent/CN210990788U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116549762A (en) * | 2023-07-10 | 2023-08-08 | 北京悦唯医疗科技有限责任公司 | Left ventricle auxiliary device |
| CN116549762B (en) * | 2023-07-10 | 2023-10-31 | 北京悦唯医疗科技有限责任公司 | Left ventricle auxiliary device |
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