CN211381646U - Low-wound lumbar puncture needle - Google Patents
Low-wound lumbar puncture needle Download PDFInfo
- Publication number
- CN211381646U CN211381646U CN201921059803.9U CN201921059803U CN211381646U CN 211381646 U CN211381646 U CN 211381646U CN 201921059803 U CN201921059803 U CN 201921059803U CN 211381646 U CN211381646 U CN 211381646U
- Authority
- CN
- China
- Prior art keywords
- puncture needle
- needle
- puncture
- core
- low
- 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 application relates to the technical field of medical instruments, in particular to a low-wound lumbar puncture needle. The lumbar puncture needle comprises a puncture needle tube and a puncture needle core, wherein the puncture needle tube comprises a needle tube body and a needle tube seat, and the puncture needle core comprises a needle core body and a needle core seat; the head of the needle core body is in a conical shape, the head of the needle tube body is in a hollow circular truncated cone shape, and when the puncture needle core is fully inserted into the puncture needle tube, the head of the needle core body is fully exposed out of the needle tube body. The utility model provides a blunt nature after low invasive type lumbar puncture needle acutely pierces struts the puncture tissue earlier, not only can reduce the lumbar puncture needle and take out the area that the fissure was left over to the dura mater, can also remain dura mater tissue fibre self contracture characteristic by the at utmost for the closed process in crack, finally reach the purpose that reduces lumbar puncture complication.
Description
Technical Field
The application relates to the technical field of medical instruments, in particular to a low-wound lumbar puncture needle.
Background
Lumbar puncture is a widely used operation in clinical work, and headache after lumbar puncture (also called low cranial pressure headache) is a common complication after lumbar puncture, and the incidence rate is about 20-30%. The increased leakage of cerebrospinal fluid caused by the injury of dura mater by the lumbar puncture needle is the main reason for headache after lumbar puncture. Headache after lumbar puncture not only affects the quality of life of the patient, but also adds additional treatment costs and even risks of secondary central nervous system infection.
The disposable lumbar puncture needle (i.e. traumatic lumbar puncture needle) widely used in China has a needle head end which is an oblique section, a needle core opening for draining cerebrospinal fluid or injecting drugs is arranged on the oblique section, the oblique section and the side surface of the needle tube form a sharp cutting edge, the edge sharply cuts off dura mater tissue fibers when the needle is inserted, the integrity of the dura mater is irreversibly damaged, and after the puncture needle is taken out, the dura mater can have cracks with irregular edges, so that abnormal exosmosis of the cerebrospinal fluid is caused, and the disposable lumbar puncture needle is an independent risk factor generated by low intracranial pressure head pain. Moreover, cerebrospinal fluid extravasation can also cause complications of wound infection, edema, and delayed healing.
In addition, the needle point of current disposable lumbar puncture needle is sharp, and the resistance is low during the needle insertion, can cut each layer tissue such as skin, ligament and dura mater fast, is difficult to experience the breakthrough sensation when needle point portion reaches the dura mater during the doctor's operation, is unfavorable for the aassessment of lumbar puncture needle puncture level to lead to the puncture failure, the increase of puncture number of times causes medical resource's waste, has more increased patient's painful experience.
In view of this, the present application is specifically made.
SUMMERY OF THE UTILITY MODEL
The invention aims to provide a low-wound lumbar puncture needle.
In order to achieve the purpose of the invention, the technical scheme of the application is as follows:
the application provides a low-wound lumbar puncture needle, which comprises a puncture needle tube and a puncture needle core, wherein the puncture needle tube comprises a needle tube body and a needle tube seat, and the puncture needle core comprises a needle core body and a needle core seat; the tail part of the needle tube body is fixedly connected with the needle tube seat, the tail part of the needle core body is fixedly connected with the needle core seat, and the puncture needle core is inserted into the puncture needle tube;
the head of the needle core body is in a conical shape, the head of the needle tube body is in a hollow circular truncated cone shape, and when the puncture needle core is fully inserted into the puncture needle tube, the head of the needle core body is completely exposed out of the needle tube body.
Optionally, when the puncture needle core is fully inserted into the puncture needle tube, the bottom edge of the cone of the head of the needle core body is joined with the upper bottom edge of the circular truncated cone of the head of the needle tube body.
Optionally, the body of the needle tube body is in a hollow round tube shape.
Optionally, the head of the needle tube body is smoothly connected with the body of the needle tube body.
Optionally, the inner and outer surfaces of the needle tube body are smooth surfaces.
Optionally, the puncture needle core is in a shape of a solid tube with a smooth outer surface.
Optionally, an included angle between a generatrix of the cone and the bottom surface is a, an included angle between a generatrix of the circular truncated cone and the bottom surface is b, and b is a.
Optionally, a is more than or equal to 30 and less than or equal to 60.
Optionally, b is more than or equal to 30 and less than or equal to 60.
The application has at least the following beneficial effects:
the application provides a blunt nature after sharp penetration earlier props open puncture tissue and is the low type lumbar puncture needle of creating of characteristic, can reduce the area that the fracture was left over to the dura mater after the lumbar puncture needle takes out on the one hand, and on the other hand can furthest remain dura mater tissue fibre self contracture characteristic for the closed process of fracture finally reaches the purpose that reduces lumbar puncture complication. The lumbar puncture needle has the advantages that the blunt and sharp characteristics of the puncture needle are balanced, and the occurrence of puncture complications is reduced on the basis of ensuring the successful puncture.
The lumbar puncture needle consists of a puncture needle core and a puncture needle tube, and is simple in structure and easy to manufacture.
Compared with the existing common lumbar puncture needle, the lumbar puncture needle has the advantages of similar appearance and similar use method, and is convenient for clinicians to use.
Drawings
FIG. 1 is a schematic structural view of a puncture needle tube in an embodiment of a low-trauma type lumbar puncture needle according to an embodiment of the present application;
FIG. 2 is an enlarged partial schematic view of FIG. 1;
FIG. 3 is a schematic structural view of a puncture needle core in the embodiment of the low-trauma type lumbar puncture needle of the present application;
FIG. 4 is an enlarged partial schematic view of FIG. 3;
FIG. 5 is a schematic structural view of the low-trauma type lumbar puncture needle according to the embodiment of the present application, in which the puncture needle core is fully inserted into the puncture needle tube;
FIG. 6 is an enlarged partial schematic view of FIG. 5;
FIG. 7 is a schematic view showing the configuration of the puncture needle core half-inserted into the puncture needle tube in the embodiment of the low-trauma type lumbar puncture needle according to the embodiment of the present application;
fig. 8 is a schematic diagram of an angle a and an angle b in a specific embodiment of the low-trauma type lumbar puncture needle according to the embodiment of the present application.
Reference numerals referred to in the drawings are as follows:
1-puncture needle tube;
11-a needle tube body;
12-needle tube seat;
2-puncture needle core;
21-a needle core;
22-needle core seat.
The present application is further illustrated with reference to specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present application.
Detailed Description
The embodiment of the application provides a low-wound lumbar puncture needle, which comprises a puncture needle tube and a puncture needle core. Specifically, the schematic structural diagram of the puncture needle tube is shown in fig. 1, and as can be seen from fig. 1, the puncture needle tube 1 includes a needle tube body 11 and a needle tube holder 12, and a tail portion of the needle tube body 11 is fixedly connected with the needle tube holder 12. Fig. 2 is an enlarged view of a part of the puncture needle tube, and as can be seen from fig. 2, the head of the needle tube body 11 is in the shape of a hollow circular truncated cone. Fig. 3 shows a schematic configuration of the lancet, and as can be seen from fig. 3, the lancet 2 includes a lancet body 21 and a lancet holder 22. Fig. 4 shows an enlarged partial schematic view of the puncture needle core, and as can be seen from fig. 4, the head of the needle core 21 has a conical shape. Fig. 5 and 7 show the cooperation of the puncture needle tube and the puncture needle core, wherein fig. 5 is a schematic structural view of the puncture needle core fully inserted into the puncture needle tube, and fig. 7 is a schematic structural view of the puncture needle core half inserted into the puncture needle tube. Fig. 6 shows an enlarged partial view of fig. 5, and as can be seen from fig. 6, the head of the needle core 21 is entirely exposed to the needle tube 11.
The head of the low-wound lumbar puncture needle integrally forms a structure similar to a pencil head, the puncture needle core is equivalent to a lead core of a pencil, and the puncture needle tube is equivalent to a wooden pen holder of the pencil. The whole only top of lumbar puncture needle of this application embodiment is conical, forms a comparatively sharp top, guarantees to pierce the puncture tissue such as skin, subcutaneous tissue, ligament smoothly, and other parts all do not have the part that can form the incision, adopt the blunt nature to strut the puncture tissue, reduce the produced sharp cutting wound to each layer of tissue of puncture to reduce lumbar puncture complication.
Optionally, when the puncture needle core is fully inserted into the puncture needle tube, the bottom edge of the cone is jointed with the upper bottom edge of the circular truncated cone.
Optionally, the body of the needle tube body is in a hollow round tube shape and is used for draining cerebrospinal fluid or injecting drugs.
Optionally, the head of the needle tube body is smoothly connected with the body of the needle tube body, so as to further reduce sharp cutting injury generated when each layer of tissue is punctured.
Optionally, the inner surface and the outer surface of the needle tube body are smooth surfaces, and the friction between the smooth inner surface and the outer surface of the puncture needle core can be reduced, so that the needle insertion operation is facilitated.
Optionally, the puncture needle core is in a shape of a solid pipe with a smooth outer surface, the friction between the puncture needle core and the inner surface of the needle tube body can be reduced due to the smooth outer surface, and the puncture needle core is used for operation.
Optionally, an included angle between a generatrix of the cone and the bottom surface is a, an included angle between a generatrix of the circular truncated cone and the lower bottom surface is b, and b is a, and a specific structural schematic diagram is shown in fig. 8.
Optionally, a is more than or equal to 30 and less than or equal to 60, and b is more than or equal to 30 and less than or equal to 60. If the angle is too large, the head of the lumbar puncture needle is too sharp, so that the resistance is low during needle insertion; if the angle is too small, the head of the lumbar puncture needle is too blunt, which causes too large resistance during needle insertion and inconvenient operation.
Specifically, the use process and the method of the low-wound lumbar puncture needle in the embodiment of the application are as follows:
when in use, a patient firstly lies on the side of a hard board bed, the spine is close to the bedside as much as possible, the back is vertical to the bed surface, the head and the neck bend towards the front chest, the knees are held by two hands and the abdomen is tightly attached, the lumbar is enabled to be convex backwards as much as possible, and the intervertebral space is enlarged to facilitate the needle insertion; then, positioning a puncture point; after the positioning is finished, the skin is disinfected from inside to outside by iodophor at the puncture site, and the diameter of the disinfection range is about 15 cm. Unfastening the puncture bag, wearing sterile gloves by an operator, checking instruments in the puncture bag, paying attention to whether the puncture needle is smooth or not, and paving a sterile hole towel; the puncture site is then anesthetized locally.
Puncturing: the operator uses the left thumb and the index finger to tighten and fix the skin of the puncture part to avoid the displacement of the puncture point, the right hand holds the low-wound lumbar puncture needle to be vertical to the dorsal plane, and the needle point is punctured into the skin towards the head, and then the front and the side are required to observe whether the needle inserting direction is correct, which is the key for successful puncture. The needle is slightly inclined to the head and slowly inserted. The head of the lumbar puncture needle has certain resistance when passing through the ligament, and when the resistance is suddenly reduced, the lumbar puncture needle is prompted to pass through the dura mater and enter the subarachnoid space. The puncture needle core is slowly pulled out, so that the cerebrospinal fluid can flow out.
After the puncture is finished, the puncture needle core is inserted into the puncture needle tube, and the low-wound lumbar puncture needle is pulled out; locally pressing for 1-2 min, sterilizing the puncture point, covering with sterile gauze, and fixing with adhesive plaster.
Although the present application has been described with reference to preferred embodiments, it is not intended to limit the scope of the claims, and many possible variations and modifications may be made by one skilled in the art without departing from the spirit of the application.
Claims (9)
1. A low-wound lumbar puncture needle comprises a puncture needle tube and a puncture needle core, wherein the puncture needle tube comprises a needle tube body and a needle tube seat, and the puncture needle core comprises a needle core body and a needle core seat; the tail part of the needle tube body is fixedly connected with the needle tube seat, the tail part of the needle core body is fixedly connected with the needle core seat, and the puncture needle core is inserted into the puncture needle tube; it is characterized in that the preparation method is characterized in that,
the head of the needle core body is in a conical shape, the head of the needle tube body is in a hollow circular truncated cone shape, and when the puncture needle core is fully inserted into the puncture needle tube, the head of the needle core body is completely exposed out of the needle tube body.
2. The low-trauma lumbar puncture needle according to claim 1, wherein when the puncture needle core is fully inserted into the puncture needle tube, the bottom edge of the cone of the head of the needle core body is engaged with the upper bottom edge of the circular truncated cone of the head of the needle tube body.
3. The low-trauma lumbar puncture needle according to claim 1, wherein the body of the needle body is hollow and tubular.
4. The low-trauma lumbar puncture needle of claim 1, wherein the head of the needle body is smoothly connected with the body of the needle body.
5. The low-trauma lumbar puncture needle of claim 1 wherein the inner and outer surfaces of the needle body are smooth surfaces.
6. The low-trauma lumbar puncture needle of claim 1, wherein the puncture needle core is in the shape of a smooth solid tube.
7. The low-trauma lumbar puncture needle according to claim 1, wherein the included angle between the generatrix of the cone and the bottom surface is a, the included angle between the generatrix of the circular truncated cone and the lower bottom surface is b, and b ═ a.
8. The low-trauma lumbar puncture needle according to claim 7, wherein a is 30 to 60.
9. The low-trauma lumbar puncture needle according to claim 7, wherein b is 30 to 60.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921059803.9U CN211381646U (en) | 2019-07-09 | 2019-07-09 | Low-wound lumbar puncture needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921059803.9U CN211381646U (en) | 2019-07-09 | 2019-07-09 | Low-wound lumbar puncture needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211381646U true CN211381646U (en) | 2020-09-01 |
Family
ID=72220397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921059803.9U Expired - Fee Related CN211381646U (en) | 2019-07-09 | 2019-07-09 | Low-wound lumbar puncture needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211381646U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113171177A (en) * | 2021-04-07 | 2021-07-27 | 上海交通大学 | Human-computer interaction control method and system capable of capturing breakthrough sensation of lumbar puncture tissue layer |
-
2019
- 2019-07-09 CN CN201921059803.9U patent/CN211381646U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113171177A (en) * | 2021-04-07 | 2021-07-27 | 上海交通大学 | Human-computer interaction control method and system capable of capturing breakthrough sensation of lumbar puncture tissue layer |
| CN113171177B (en) * | 2021-04-07 | 2023-02-17 | 上海交通大学 | Human-computer interaction control method and system capable of capturing breakthrough sensation of lumbar puncture tissue layer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2001293085A (en) | Indwelling needle for dialysis | |
| CN205759059U (en) | Safety venous port not damaged pin puncture fixator | |
| CN104771222A (en) | Neuroendoscopic sheath manufacturing method and neuroendoscopic sheath | |
| CN211381646U (en) | Low-wound lumbar puncture needle | |
| CN102961174B (en) | Arc-shaped-edge needle knife | |
| CN206473379U (en) | A kind of Pain Management fixator for anaesthesia puncture | |
| CN209827912U (en) | Drainage catheter | |
| CN207694061U (en) | A kind of anesthetic tube | |
| CN208974598U (en) | Five-element needle suit | |
| CN206587242U (en) | It is a kind of to create hypodynia sense medical needle without interior | |
| CN208785280U (en) | Acupuncture point preburied pin | |
| CN215306496U (en) | Lumbar puncture needle capable of avoiding damage to nerve roots and dura mater sac | |
| CN207804350U (en) | A kind of percutaneous needle | |
| CN201806734U (en) | Multifunctional thread-burial needle | |
| CN214805202U (en) | Trigeminal semilunar junction compression system | |
| CN217366711U (en) | Novel tunnel needle for peritoneal dialysis catheter placement operation | |
| CN205569317U (en) | Needle subassembly of sunkening cord | |
| CN215306520U (en) | Spacing dermatotome that expands of PICC | |
| CN214969032U (en) | Traditional chinese medical science acupuncture is pricked flat appurtenance | |
| CN203483461U (en) | Working cannula for minimally-invasive cerebral hematoma removing surgery | |
| CN210009233U (en) | Hemostatic transfusion plaster | |
| CN219048735U (en) | Novel thread needle knife | |
| CN212213834U (en) | Medical mouth gag | |
| AU2019101011A4 (en) | Hook needle for hook operation of traditional chinese medicine with function of perpendicular insertion | |
| CN208096796U (en) | A kind of ultrasound guided puncture needle of single saccule |
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: 20200901 Termination date: 20210709 |