CN211094540U - Oblique angle combination formula pjncture needle of adjustable depth of penetration and angle - Google Patents
Oblique angle combination formula pjncture needle of adjustable depth of penetration and angle Download PDFInfo
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- CN211094540U CN211094540U CN201921657146.8U CN201921657146U CN211094540U CN 211094540 U CN211094540 U CN 211094540U CN 201921657146 U CN201921657146 U CN 201921657146U CN 211094540 U CN211094540 U CN 211094540U
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Abstract
The utility model relates to an oblique angle combination formula pjncture needle of adjustable depth of penetration and angle, the pjncture needle is by outer trocar, the inlayer trocar, the nook needle is constituteed with propulsion subassembly, it is located outer trocar and inlayer trocar rear end to impel the subassembly, the inlayer trocar is through impeling subassembly and outer trocar sliding connection, outer trocar includes outer needle section and screw thread section, outer needle section front end is fixed to be provided with the thorn head, be provided with the oblique angle export on the lateral wall of outer needle section and thorn head junction, the inlayer trocar includes inner needle section and buckle section, the nook needle is the cylinder form, the nook needle front end is the inclined plane, the rear end is fixed to be provided with the section of gripping, impel the subassembly including impeling knob and shutting. An object of the utility model is to solve current pjncture needle when the puncture stroke is longer, the angle is great and puncture target structure is complicated or there is the obstacle on the puncture route around, the problem of puncture difficulty provides the oblique angle combination formula pjncture needle of adjustable puncture degree of depth and angle.
Description
Technical Field
The utility model relates to the technical field of medical equipment, especially, relate to an oblique angle combination formula pjncture needle of adjustable depth of penetration and angle.
Background
The lumbar puncture is one of the examination methods commonly used in the clinical neurology department, has important value for the diagnosis and treatment of nervous system diseases, and is an indispensable examination and treatment method in the operations of diagnosing the neurology diseases, spinal anesthesia, spinal administration, spinal angiography, cerebrospinal fluid drainage and the like. In the operation of flowing and discharging cerebrospinal fluid, the puncture needle is an indispensable medical tool, in the operation process, firstly, the puncture is carried out from the waist 2 to the sacrum 1 (mainly waist 3-4) intervertebral space, the local conventional disinfection and anesthesia are carried out, the puncture needle is slowly punctured along the direction of the spinous process, when the needle point meets sclerotin in the needle inserting process, the needle is retracted to the subcutaneous part to be subjected to angle correction and then punctured, the dura mater spinalis is punctured to reach the subarachnoid space, the lumbar puncture needle is extracted to flow out the cerebrospinal fluid, and then the lumbar puncture needle is put in and the puncture needle is extracted. In this way, the puncture needle is punctured for a plurality of times to the patient in the process, the pain of the patient is increased, and inaccurate positioning and dislocation are easily caused. The existing puncture needles are all straight puncture needles, the puncture stroke is long, and when the angle is large, the structure around a puncture target is complex or an obstacle exists on a puncture path, the puncture process is very difficult.
Disclosure of Invention
An object of the utility model is to solve current pjncture needle when the puncture stroke is longer, the angle is great and puncture target structure is complicated or there is the obstacle on the puncture route around, the problem of puncture difficulty provides the oblique angle combination formula pjncture needle of adjustable puncture degree of depth and angle.
In order to achieve the above object, the utility model adopts the following technical scheme:
a bevel combined type puncture needle capable of adjusting puncture depth and angle is composed of an outer layer trocar, an inner layer trocar, a needle core and a pushing assembly, wherein the inner layer trocar is sleeved in the outer layer trocar, the needle core is sleeved in the inner layer trocar, the pushing assembly is positioned at the rear ends of the outer layer trocar and the inner layer trocar, and the inner layer trocar is in sliding connection with the outer layer trocar through the pushing assembly;
the outer-layer trocar comprises an outer trocar barrel section and a thread section, the outer trocar barrel section is in a circular tube shape, a puncture head is fixedly arranged at the front end of the outer trocar barrel section, two ends of the puncture head are inclined planes, an inclined angle outlet is arranged on the side wall of the joint of the outer trocar barrel section and the puncture head, the front end of the thread section is communicated with the rear end of the outer trocar barrel section, the rear end of the thread section is open, the cross section of the thread section is in an outer circle inner square structure, and the outer surface of the thread section is in a;
the inner-layer trocar comprises an inner trocar tube section and a buckle section, the inner trocar tube section is in a circular tube shape, the front end of the inner trocar tube section is an inclined plane, the buckle section is communicated with the inner trocar tube section, the cross section of the buckle section is in a square shape corresponding to the thread section, and a circular-ring-shaped boss is arranged on the outer wall of the rear part of the buckle section;
the needle core is cylindrical, the front end of the needle core is an inclined plane, and the rear end of the needle core is fixedly provided with a holding section;
the propelling component comprises a propelling knob and a locking knob, the propelling knob is a hollow cylinder, the rear ends of the inner surface and the outer surface of the propelling knob are of threaded structures, the propelling knob is in threaded sleeve fit with the threaded section, the locking knob is a hollow cylinder, the inner surface of the locking knob is of a threaded structure, the front end of the locking knob is in threaded sleeve fit with the rear end of the propelling knob, a baffle is fixedly arranged at the rear end of the locking knob, and a through hole is formed in the middle of the baffle.
Furthermore, a guard plate is arranged on the outer side of the threaded section, the guard plate is in a circular tube shape, and the central axis of the guard plate coincides with the central axis of the threaded section.
Further, the distance between the guard plate and the threaded section is greater than the thickness of the pushing knob.
Furthermore, scales are arranged on the outer surface of the propelling knob along the length direction of the propelling knob.
Further, the length of the inner syringe section is greater than the length of the outer syringe section.
Furthermore, a funnel-shaped groove is formed in the center of the rear end face of the buckling section.
Furthermore, a positioning block corresponding to the groove is fixedly arranged at the front end of the holding section, and the central axis of the positioning block coincides with the central axis of the holding section.
Through the technical scheme, the beneficial effects of the utility model are that:
the utility model discloses a puncture stroke has been shortened in the combination of outer trocar and inlayer trocar, and outer trocar front end is provided with the oblique angle export, change the puncture direction when the inlayer trocar stretches out from the oblique angle export, circuitous puncture effect has been realized, obstacle on the puncture route has been avoided, can effectively reduce the complication of puncture operation, and can puncture the position that ordinary pjncture needle is difficult to reach, clinical puncture indication of adaptation has been enlarged, and can advance the knob through the adjustment and adjust and fixed puncture needle position, in order to adapt to the operation demand.
Drawings
Fig. 1 is one of the structural schematic diagrams of the bevel angle combined puncture needle with adjustable puncture depth and angle of the utility model.
Fig. 2 is a second schematic structural view of the bevel angle combined type puncture needle with adjustable puncture depth and angle of the present invention.
Fig. 3 is a structural schematic view of the outer layer trocar of the bevel angle combined puncture needle with adjustable puncture depth and angle.
Fig. 4 is a structural schematic view of the inner layer trocar of the bevel angle combined puncture needle with adjustable puncture depth and angle.
Fig. 5 is a schematic structural view of the needle core of the bevel angle combined puncture needle of the utility model with adjustable puncture depth and angle.
Fig. 6 is a sectional view of the bevel combined puncture needle with adjustable puncture depth and angle, taken along the line a-a in fig. 3.
Fig. 7 is a structural sectional view at the position B-B in fig. 4 of the bevel combined puncture needle with adjustable puncture depth and angle according to the present invention.
The reference numbers in the drawings are as follows: 1 is outer layer trocar, 2 is the inlayer trocar, 3 is the nook closing member, 4 is the section of gripping, 5 is the propulsion knob, 6 is the shutting knob, 7 is the baffle, 101 is outer syringe section, 102 is the screw thread section, 103 is the thorn head, 104 is the oblique angle export, 105 is the backplate, 201 is interior syringe section, 202 is the buckle section, 203 is the boss.
Detailed Description
The invention will be further explained with reference to the drawings and the detailed description below:
as shown in fig. 1-7, the bevel combined type puncture needle capable of adjusting the puncture depth and angle comprises an outer-layer trocar 1, an inner-layer trocar 2, a needle core 3 and a pushing assembly, wherein the inner-layer trocar 2 is sleeved in the outer-layer trocar 1, the needle core 3 is sleeved in the inner-layer trocar 2, the pushing assembly is positioned at the rear ends of the outer-layer trocar 1 and the inner-layer trocar 2, and the inner-layer trocar 2 is in sliding connection with the outer-layer trocar 1 through the pushing assembly;
the outer-layer trocar 1 comprises an outer trocar section 101 and a thread section 102, the outer trocar section 101 is in a circular tube shape, a puncture head 103 is fixedly arranged at the front end of the outer trocar section 101, both ends of the puncture head 103 are inclined planes, an inclined angle outlet 104 is arranged on the side wall of the joint of the outer trocar section 101 and the puncture head 103, the front end of the thread section 102 is communicated with the rear end of the outer trocar section 101, the rear end of the thread section 102 is open, the cross section of the thread section 102 is in an outer-circle inner-square structure, and the outer surface of the thread section 102 is in a thread structure;
the inner-layer trocar 2 comprises an inner trocar section 201 and a buckle section 202, the inner trocar section 201 is in a circular tube shape, the front end of the inner trocar section 201 is an inclined plane, the buckle section 202 is communicated with the inner trocar section 201, the cross section of the buckle section 202 is in a square shape corresponding to the thread section 102, and the outer wall of the rear part of the buckle section 202 is provided with a circular-ring-shaped boss 203;
the stylet 3 is cylindrical, the front end of the stylet 3 is an inclined plane, and the rear end of the stylet is fixedly provided with a holding section 4;
the pushing assembly comprises a pushing knob 5 and a locking knob 6, the pushing knob 5 is a hollow cylinder, the rear ends of the inner surface and the outer surface of the pushing knob 5 are both in a threaded structure, the pushing knob 5 is in threaded sleeve fit on the threaded section 102, the locking knob 6 is a hollow cylinder, the inner surface of the locking knob 6 is in a threaded structure, the front end of the locking knob 6 is in threaded sleeve fit on the rear end of the pushing knob 5, the rear end of the locking knob 6 is fixedly provided with a baffle 7, and the middle part of the baffle 7 is provided with a through hole; the pushing enables the pushing knob 5 to advance spirally along the thread section 102, the baffle 7 of the locking knob 6 is abutted to the boss 203 of the buckling section 202, and the pushing knob 5 drives the inner-layer trocar 2 and the stylet 3 to advance.
In order to determine the puncture length of the inner-layer trocar 2 extending out of the outer-layer trocar 1, in the embodiment, a guard plate 105 is arranged outside the threaded section 102, the guard plate 105 is in a circular tube shape, and the central axis of the guard plate 105 coincides with the central axis of the threaded section 102; the distance between the guard plate 105 and the threaded section 102 is greater than the thickness of the pushing knob 5; scales are arranged on the outer surface of the propelling knob 5 along the length direction of the propelling knob 5.
To ensure that the front end of the inner trocar 2 extends out of the bevel outlet 104 of the outer trocar 1, the length of the inner barrel section 201 is in this embodiment greater than the length of the outer barrel section 101.
In order to optimize the product structure and enable the needle core 3 to be accurately and quickly inserted into the inner-layer trocar 2, in this embodiment, a funnel-shaped groove is formed in the center of the rear end face of the buckle section 202; the front end of the holding section 4 is fixedly provided with a positioning block corresponding to the groove, and the central axis of the positioning block is superposed with the central axis of the holding section 4.
The utility model discloses a 1 head end top of outer trocar has oblique angle export 104, earlier after the combination the utility model discloses puncture to the target around perpendicularly, through rotating this pjncture needle adjustment export direction, aim at the puncture target, rotatory knob 5 that advances, make front end screw thread registrate drive inlayer trocar 2 and nook closing member 3 and pass the oblique angle export 104 of 1 head end of outer trocar and advance to the puncture target gradually, until reaching the target location, then extract nook closing member 3, the passageway is established and is accomplished, after the treatment is accomplished earlier with nook closing member 3 penetrate inlayer trocar 2, reverse rotation advances knob 5, in withdrawing outer trocar 1 cylinder with inlayer trocar 2 gradually, extract the combination trocar, the treatment is ended.
The utility model discloses can be used to the radio frequency treatment and establish the passageway and use, can be used to medicine injection and use, also can be used to the biopsy of tissue puncture.
The utility model discloses a circuitous puncture effect has shortened the puncture stroke, has kept away the obstacle on the puncture route, can effectively reduce the complication of puncture operation, can puncture the position that ordinary pjncture needle is difficult to reach moreover, has enlarged clinical puncture indication, can advance knob 5 through the adjustment in addition and adjust and fixed puncture needle position to adapt to the operation demand.
The above-mentioned embodiments are merely preferred embodiments of the present invention, and not intended to limit the scope of the present invention, so that equivalent changes or modifications made by the structure, features and principles of the present invention should be included in the claims of the present invention.
Claims (7)
1. The bevel combined type puncture needle capable of adjusting the puncture depth and angle is characterized by comprising an outer layer trocar (1), an inner layer trocar (2), a needle core (3) and a propelling assembly, wherein the inner layer trocar (2) is sleeved in the outer layer trocar (1), the needle core (3) is sleeved in the inner layer trocar (2), the propelling assembly is positioned at the rear ends of the outer layer trocar (1) and the inner layer trocar (2), and the inner layer trocar (2) is in sliding connection with the outer layer trocar (1) through the propelling assembly;
the outer-layer trocar (1) comprises an outer trocar barrel section (101) and a thread section (102), the outer trocar barrel section (101) is in a circular tube shape, a puncture head (103) is fixedly arranged at the front end of the outer trocar barrel section (101), both ends of the puncture head (103) are inclined planes, an oblique angle outlet (104) is arranged on the side wall of the joint of the outer trocar barrel section (101) and the puncture head (103), the front end of the thread section (102) is communicated with the rear end of the outer trocar barrel section (101), the rear end of the thread section (102) is opened, the cross section of the thread section (102) is in an outer circle inner square structure, and the outer surface of the thread section (102) is;
the inner-layer trocar (2) comprises an inner trocar tube section (201) and a buckle section (202), the inner trocar tube section (201) is in a circular tube shape, the front end of the inner trocar tube section (201) is an inclined plane, the buckle section (202) is communicated with the inner trocar tube section (201), the cross section of the buckle section (202) is square corresponding to the thread section (102), and a circular-ring-shaped boss (203) is arranged on the outer wall of the rear part of the buckle section (202);
the needle core (3) is cylindrical, the front end of the needle core (3) is an inclined plane, and the rear end of the needle core is fixedly provided with a holding section (4);
the propulsion assembly is including propelling knob (5) and shutting knob (6), it is hollow cylinder to impel knob (5), impels knob (5) internal surface and surface rear end to be helicitic texture, impels knob (5) screw thread registrate on screw thread section (102), shutting knob (6) are hollow cylinder, and shutting knob (6) internal surface is helicitic texture, and shutting knob (6) front end screw thread registrate is at the rear end of propelling knob (5), and shutting knob (6) rear end is fixed and is provided with baffle (7), baffle (7) middle part is provided with the via hole.
2. The bevel angle combined puncture needle with the adjustable puncture depth and angle as claimed in claim 1, wherein a guard plate (105) is arranged outside the threaded section (102), the guard plate (105) is in a circular tube shape, and the central axis of the guard plate (105) coincides with the central axis of the threaded section (102).
3. An adjustable penetration depth and angle bevel combination needle according to claim 2, wherein the distance between the shield (105) and the threaded section (102) is greater than the thickness of the push knob (5).
4. The bevel angle combination puncture needle with adjustable puncture depth and angle of claim 2, wherein the outer surface of the push knob (5) is provided with graduations along the length direction of the push knob (5).
5. An adjustable penetration depth and angle bevel combination needle of claim 1, wherein the length of said inner barrel section (201) is greater than the length of said outer barrel section (101).
6. The bevel angle combined puncture needle with adjustable puncture depth and angle of claim 1, wherein the center of the back end surface of the snap section (202) is provided with a funnel-shaped groove.
7. The bevel combined type puncture needle with the adjustable puncture depth and angle as claimed in claim 6, wherein a positioning block corresponding to the groove is fixedly arranged at the front end of the holding section (4), and the central axis of the positioning block coincides with the central axis of the holding section (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921657146.8U CN211094540U (en) | 2019-09-30 | 2019-09-30 | Oblique angle combination formula pjncture needle of adjustable depth of penetration and angle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921657146.8U CN211094540U (en) | 2019-09-30 | 2019-09-30 | Oblique angle combination formula pjncture needle of adjustable depth of penetration and angle |
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| Publication Number | Publication Date |
|---|---|
| CN211094540U true CN211094540U (en) | 2020-07-28 |
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| CN201921657146.8U Active CN211094540U (en) | 2019-09-30 | 2019-09-30 | Oblique angle combination formula pjncture needle of adjustable depth of penetration and angle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113952009A (en) * | 2021-12-23 | 2022-01-21 | 真健康（北京）医疗科技有限公司 | Targeted drug delivery needle clamping navigation device and targeted drug delivery treatment system |
-
2019
- 2019-09-30 CN CN201921657146.8U patent/CN211094540U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113952009A (en) * | 2021-12-23 | 2022-01-21 | 真健康（北京）医疗科技有限公司 | Targeted drug delivery needle clamping navigation device and targeted drug delivery treatment system |
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