CN212015727U - Percutaneous intervertebral injection device - Google Patents
Percutaneous intervertebral injection device Download PDFInfo
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- CN212015727U CN212015727U CN202020058767.0U CN202020058767U CN212015727U CN 212015727 U CN212015727 U CN 212015727U CN 202020058767 U CN202020058767 U CN 202020058767U CN 212015727 U CN212015727 U CN 212015727U
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- puncture needle
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Abstract
The utility model discloses a percutaneous intervertebral drug injection device, which comprises a hollow puncture needle head, a bendable drug injection needle head and a guide core; the head of the bendable medicine injection needle head is a bendable part with radian, and the bendable part is made of elastic memory material; the guide core can be inserted into the bendable medicine injection needle, and the length of the guide core is not shorter than the straightened length of the bendable medicine injection needle; the bendable medication injection needle is insertable into the hollow spike needle such that the bend is at least partially capable of extending outwardly of the end aperture of the hollow spike needle. Insert the flexible injection syringe needle with leading the core in, straighten the flexion for it is more convenient that flexible injection syringe needle inserts in the cavity puncture syringe needle, reduces because of misoperation leads to the risk that flexible injection syringe needle warp.
Description
Technical Field
The utility model relates to a medicine injection device, in particular to a percutaneous intervertebral medicine injection device.
Background
In the modern medical treatment process, an injection therapy is often used, liquid or gas is injected into a human body by means of a medical apparatus such as an injector to achieve the purposes of diagnosing, treating and preventing diseases, and a needle head of the injector is a hollow straight metal needle tube. In the pain treatment process, medicines are often required to be injected at the hole between the cones, the existing surgical instrument for injecting the medicines is a common straight needle, and the medicines are difficult to accurately inject when the medicines are required to be injected to the parts such as the cone fossa and the like, and the operation is difficult, so that the medicine injection area is easily overlarge. The invention patent application with application publication number CN109481014A discloses a microwave ablation device with elastic bending radian; comprises a puncture tube and an ablation needle which are mutually matched; the puncture tube comprises a puncture tube body and a fixed joint which are connected in sequence, the ablation needle comprises a needle head, a needle rod, a fixed seat and a handle which are connected in sequence from a far end to a near end, the needle rod can penetrate through the puncture tube body, the needle rod comprises a far end part, a bendable part and a needle rod main body in sequence from the far end to the near end, and the bendable part in the needle rod is made of memory materials with bending radian; in an initial state, the bendable part of the ablation needle is in a bending radian state; after the needle head and the needle rod of the ablation needle enter the puncture tube, the bendable part of the ablation needle is positioned in the puncture tube body and limited by the inner wall of the ablation needle; the bendable part of the ablation needle is recovered to the bending state after extending out of the puncture tube. However, the ablation needle rod provided with the bendable part is very inconvenient to operate when being inserted into the puncture tube, and the ablation needle rod is easy to deform and damage when the operation is wrong.
SUMMERY OF THE UTILITY MODEL
Therefore, the utility model aims to provide a percutaneous intervertebral injection device which can be conveniently and rapidly installed and used.
In order to realize the purpose, the utility model discloses a percutaneous intervertebral drug injection device, which comprises a hollow puncture needle, a bendable drug injection needle and a guide core; at least the head part of the bendable medicine injection needle head is a bendable part; the guide core can be inserted into the bendable medicine injection needle, and the length of the guide core is not shorter than the straightened length of the bendable medicine injection needle; the bendable medication injection needle is insertable into the hollow spike needle such that the bend is at least partially capable of extending outwardly of the end aperture of the hollow spike needle.
The hollow puncture needle head comprises a puncture needle tube and a puncture needle seat, and a first positioning groove is formed in the puncture needle seat; the bendable medicine injection needle comprises a medicine injection needle tube and a medicine injection needle seat, and a first positioning pin is arranged on the medicine injection needle seat; when the bendable medicine injection needle head is inserted into the hollow puncture needle head, the first positioning pin can be inserted into the first positioning groove.
A protective frame is arranged on the medicine injection needle seat, and a second positioning groove is formed in the protective frame; lead the core including straight stick and lead the core handle, it is equipped with the second locating pin to lead the core handle lower edge, lead the core and insert when flexible injection syringe needle, the second locating pin can insert the second constant head tank.
The hollow puncture needle head comprises a puncture needle tube and a puncture needle seat, and a first positioning groove is formed in the puncture needle seat; the percutaneous intervertebral drug injection device further comprises a straight needle core, and the straight needle core can penetrate into the cavity of the puncture needle tube of the hollow puncture needle head.
The straight needle core comprises a straight needle and a handle, a third positioning pin is arranged on the handle, and the third positioning pin can be inserted into the first positioning groove.
The end part of the straight stylet is provided with a wedge-shaped surface.
The bendable portion is made of a resilient memory material.
The puncture needle tube is provided with scales.
The puncture needle tube is provided with scales.
The puncture needle base is also provided with a protective wing.
The puncture needle base is provided with circumferential scales.
Adopt above-mentioned technical scheme, the utility model discloses a beneficial technological effect does:
1. insert the flexible injection syringe needle with leading the core in, straighten flexible portion for it is more convenient that flexible injection syringe needle inserts in the cavity puncture syringe needle, reduces because of misoperation leads to the risk that flexible injection syringe needle warp.
2. The puncture needle base is provided with a first positioning groove and circumferential scales, and the medicine injection needle base is provided with a first positioning pin. Because the relative positions of the bendable portions of the first locator pin and the administration needle cannula are fixed. Therefore, after the first positioning pin is inserted into the first positioning groove, the relative position of the bendable part of the injection needle tube is fixed. When in use, the first positioning pin is pulled out of the first positioning groove, and the bendable medicine injection needle head is rotated. The bendable part of the injection needle tube is adjusted to a correct angle according to the first positioning groove and the circumferential scale, and the injection needle tube is pushed into a human body, so that the bendable part of the injection needle tube can puncture the correct part of the human body, and injection is completed.
3. The straight needle core is inserted into the cavity of the puncture needle tube, then the puncture needle is inserted into the body of a patient from the puncture point of the patient to reach the preset depth and position, the straight needle core is drawn out, and the bendable medicine injection needle head is inserted into the hollow puncture needle head. Therefore, the probability that the needle tube is blocked when human tissues enter the hollow puncture needle head during puncture can be reduced.
4. The puncture needle tube of the hollow puncture needle head is provided with scales, so that medical workers can accurately judge the puncture depth of the hollow puncture needle head when puncturing, and the medical workers can puncture the hollow puncture needle head to a preset position more accurately.
Drawings
Fig. 1 is a schematic structural view of a percutaneous intervertebral drug injection device.
Fig. 2 is a schematic view of a hollow piercing needle.
Fig. 3 is a schematic structural view of a bendable medicine injection needle.
Fig. 4 is a schematic structural view of the guide core.
Fig. 5 is a schematic structural view of a straight core needle.
FIG. 6 is a schematic view of the use of a hollow piercing needle in combination with a straight core.
FIG. 7 is a schematic view of the use of a flexible injection needle in conjunction with a introducer.
In FIGS. 1-7: a hollow puncture needle head 1; 1-1 of a puncture needle tube; 1-2 parts of a puncture needle seat; 1-3 parts of a needle seat opening; wings 1-4; 1-5 of a first positioning groove; 1-6 parts of puncture needle inner cavity; a bendable medicine injection needle 2; 2-1 parts of a medicine injection needle tube and 2-2 parts of a medicine injection needle seat; 2-3 of a protective frame; a first locating pin 2-4; 2-5 of a medicine injection inlet; 2-6 parts of a medicine injection outlet; 2-7 of a second positioning groove; a guide core 3; 3-1 parts of straight rod; a core guide handle 3-2; a second positioning pin 3-3; a straight needle core 4; 4-1 of a straight needle; 4-2 of a handle; and a third positioning pin 4-3.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 to 7, the percutaneous intervertebral drug injection device of the present invention comprises a hollow puncture needle 1, a bendable drug injection needle 2 and a guide core 3; the hollow puncture needle comprises a puncture needle tube 1-1 and a puncture needle seat 1-2, wherein the puncture needle tube 1-1 is a hollow metal tube body with a pointed head and is arranged on the puncture needle seat 1-2, and a length scale is carved on the tube body of the puncture needle tube 1-1, so that medical personnel can accurately judge the puncture depth of the puncture needle tube 1-1 during puncture, and the medical personnel can puncture the puncture needle tube 1-1 to a preset position more accurately. A puncture needle cavity 1-6 is arranged in the puncture needle seat 1-2, one end of the puncture needle seat 1-2 is provided with a puncture needle tube 1-1, and the other end is provided with a needle seat opening 1-3; one end of the puncture needle cavity 1-6 is communicated with the hollow cavity of the puncture needle tube 1-1, and the other end is connected with the needle seat opening 1-3. The outlet of the tip of the hollow inner cavity of the puncture needle tube 1-1 is provided with a radian which is bent towards the opening direction. The puncture needle base 1-2 is also provided with a protective wing 1-4 for facilitating the operator to stabilize the puncture angle during puncture. Meanwhile, the outlet of the tip of the hollow cavity of the puncture needle tube 1-1 is provided with a radian which is bent towards the opening direction so as to help the bendable part to bend towards the preset direction.
The bendable medicine injection needle 2 comprises a medicine injection needle tube 2-1 and a medicine injection needle seat 2-2, the head of the medicine injection needle tube 2-1 is a bendable part with radian, can be made of materials such as resin and plastic, and can also be made of elastic memory materials (including but not limited to PEEK materials or PI materials or PTFE materials), and the head is provided with a medicine injection outlet 2-6; a medicine injection channel is arranged in the medicine injection needle seat 2-2, one end of the medicine injection needle seat 2-2 is provided with a medicine injection needle tube 2-1, and the other end is provided with a medicine injection inlet 2-5; can be externally connected with an injector; the base of the medicine injection needle is also provided with a protective frame 2-3, and the protective frame 2-3 is arranged on the medicine injection tube seat 2-2 in a surrounding mode.
The guide core 3 comprises a straight rod 3-1 and a guide core handle 3-2, the straight rod 3-1 can be inserted into the bendable medicine injection needle 2, the length of the straight rod is not shorter than the straightened length of the bendable medicine injection needle 2, and the bendable medicine injection needle 2 can be inserted into the hollow puncture needle 1 so that the bendable part extends out of the end hole of the hollow puncture needle 1. Insert flexible injection syringe needle 2 with leading core 3 in, flare-outing flexible portion for it is more convenient that flexible injection syringe needle 2 inserts in cavity puncture syringe needle 1, reduces because of misoperation leads to the risk that flexible injection syringe needle 2 warp.
The puncture needle seat 1-2 is provided with a first positioning groove 1-5, the medicine injection needle seat 2-2 is provided with a first positioning pin 2-4, and after the bendable medicine injection needle head 2 is inserted into the hollow puncture needle head 1, the first positioning pin 2-4 can be inserted into the first positioning groove 1-5. The medicine injection needle seat 2-2 is provided with a second positioning groove 2-7, the core guide 3 is provided with a second positioning pin 3-3 on the core guide handle 3-2, and after the core guide 3 is inserted into the bendable medicine injection needle head 2, the second positioning pin 3-3 can be inserted into the second positioning groove 2-7. The first positioning pin 2-4, the second positioning slot 2-7 and the medicine injection outlet 2-6 are positioned on the same plane. The medicine injection needle holder 2-2 is further provided with circumferential scales, and after the first positioning pin 2-4 is pulled out of the first positioning groove 1-5, a user can confirm the pushing angle of the bendable medicine injection needle head 2 according to the relative position of the first positioning pin 2-4 and the circumferential scales. When in use, the first positioning pin 2-4 is pulled out of the first positioning groove 1-5, and the bendable medicine injection needle head 2 is rotated. The bendable part of the injection needle tube is adjusted to a correct angle according to the first positioning grooves 1-5 and the circumferential scale, and the injection needle tube is pushed into a human body, so that the bendable part of the injection needle tube can puncture the correct part of the human body, and injection is completed. The product is convenient to use, can effectively administer medicine to non-linear medicine administration parts, such as cone fossa parts, and avoids overlarge medicine injection area caused by inaccurate medicine administration parts.
The percutaneous intervertebral drug injection device further comprises a straight needle core 4 and a handle 4-2, wherein the straight needle 4-1 is a metal rod with an inclined opening tip, and the inclined opening tip of the straight needle core is a wedge-shaped surface. One end opposite to the tip of the bevel opening is arranged at the center of the handle 4-2; the straight needle 4-1 can penetrate into the cavity of the puncture needle tube 1-1 of the hollow puncture needle head 1. The lower edge of the handle 4-2 is provided with a third positioning pin 4-3, and the third positioning pin 4-3 can be inserted into the first positioning groove 1-5. When the straight needle core 4 is inserted into the cavity of the puncture needle tube 1-1, the puncture needle is inserted into the body of the patient from the puncture point of the patient to reach the preset depth and position, the straight needle core 4 is drawn out, and the bendable medicine injection needle head 2 is inserted into the puncture needle. Therefore, the probability that human tissues enter the needle tube of the puncture needle to block the needle tube during puncture can be reduced.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.
Claims (13)
1. A percutaneous intervertebral drug injection device, characterized in that: comprises a hollow puncture needle head, a bendable medicine injection needle head and a guide core; at least the head part of the bendable medicine injection needle head is a bendable part; the guide core can be inserted into the bendable medicine injection needle, and the length of the guide core is not shorter than the straightened length of the bendable medicine injection needle; the bendable medication injection needle is insertable into the hollow spike needle such that the bend is at least partially capable of extending outwardly of the end aperture of the hollow spike needle.
2. The percutaneous intervertebral drug delivery device of claim 1, wherein: the hollow puncture needle head comprises a puncture needle tube and a puncture needle seat, and a first positioning groove is formed in the puncture needle seat; the bendable medicine injection needle comprises a medicine injection needle tube and a medicine injection needle seat, and a first positioning pin is arranged on the medicine injection needle seat; when the bendable medicine injection needle head is inserted into the hollow puncture needle head, the first positioning pin can be inserted into the first positioning groove.
3. The percutaneous intervertebral drug delivery device of claim 2, wherein: a protective frame is arranged on the medicine injection needle seat, and a second positioning groove is formed in the protective frame; lead the core including straight stick and lead the core handle, it is equipped with the second locating pin to lead the core handle lower edge, lead the core and insert when flexible injection syringe needle, the second locating pin can insert the second constant head tank.
4. A percutaneous intervertebral drug delivery device as claimed in any one of claims 2 to 3, wherein: the percutaneous intervertebral drug injection device further comprises a straight needle core, and the straight needle core can penetrate into the cavity of the puncture needle tube of the hollow puncture needle head.
5. The percutaneous intervertebral drug delivery device of claim 4, wherein: the straight needle core comprises a straight needle and a handle, a third positioning pin is arranged on the handle, and the third positioning pin can be inserted into the first positioning groove.
6. The percutaneous intervertebral drug delivery device of claim 4, wherein: the end part of the straight stylet is provided with a wedge-shaped surface.
7. A percutaneous intervertebral drug delivery device as claimed in any one of claims 1 to 3, wherein: the bendable portion is made of a resilient memory material.
8. A percutaneous intervertebral drug delivery device as claimed in any one of claims 2 to 3, wherein: the puncture needle tube is provided with scales.
9. A percutaneous intervertebral drug delivery device as claimed in any one of claims 2 to 3, wherein: the puncture needle base is also provided with a protective wing.
10. A percutaneous intervertebral drug delivery device as claimed in any one of claims 2 to 3, wherein: the puncture needle base is provided with circumferential scales.
11. The percutaneous intervertebral drug delivery device of claim 1, wherein: the hollow puncture needle head comprises a puncture needle tube and a puncture needle seat, and a first positioning groove is formed in the puncture needle seat; the percutaneous intervertebral drug injection device further comprises a straight needle core, and the straight needle core can penetrate into the cavity of the puncture needle tube of the hollow puncture needle head.
12. The percutaneous intervertebral drug delivery device of claim 11, wherein: the straight needle core comprises a straight needle and a handle, a third positioning pin is arranged on the handle, and the third positioning pin can be inserted into the first positioning groove.
13. The percutaneous intervertebral drug delivery device of claim 11, wherein: the end part of the straight stylet is provided with a wedge-shaped surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020058767.0U CN212015727U (en) | 2020-01-10 | 2020-01-10 | Percutaneous intervertebral injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020058767.0U CN212015727U (en) | 2020-01-10 | 2020-01-10 | Percutaneous intervertebral injection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212015727U true CN212015727U (en) | 2020-11-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020058767.0U Active CN212015727U (en) | 2020-01-10 | 2020-01-10 | Percutaneous intervertebral injection device |
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| Country | Link |
|---|---|
| CN (1) | CN212015727U (en) |
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- 2020-01-10 CN CN202020058767.0U patent/CN212015727U/en active Active
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