CN213850950U - Adjustable coaxial puncture needle - Google Patents
Adjustable coaxial puncture needle Download PDFInfo
- Publication number
- CN213850950U CN213850950U CN202022103637.7U CN202022103637U CN213850950U CN 213850950 U CN213850950 U CN 213850950U CN 202022103637 U CN202022103637 U CN 202022103637U CN 213850950 U CN213850950 U CN 213850950U
- Authority
- CN
- China
- Prior art keywords
- needle
- puncture
- adjustable
- inner needle
- coaxial
- 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.)
- Active
Links
Images
Abstract
The utility model belongs to the technical field of medical instrument and specifically relates to a coaxial pjncture needle with adjustable. The adjustable coaxial puncture needle comprises a puncture inner needle and a sleeve sleeved outside the puncture inner needle, wherein the upper end of the sleeve is provided with an adjusting seat movably connected with the puncture inner needle, the puncture inner needle is provided with an adjusting mechanism, the adjusting seat is provided with a limiting groove corresponding to the adjusting mechanism, and the length of the puncture inner needle is adjusted by controlling the position of the adjusting mechanism in the limiting groove. The length of the puncture inner needle is adjusted by controlling the position of the adjusting mechanism in the limiting groove, so that the coaxial puncture needle has the advantages of adjustable length, simple structure and convenience in use.
Description
Technical Field
The utility model belongs to the technical field of medical instrument and specifically relates to a coaxial pjncture needle with adjustable.
Background
In recent years, with the development of medical treatment toward precise medical treatment and fine treatment, obtaining tissues by needle biopsy to obtain pathological basis and gene detection result has become the most important and powerful basis for clinical treatment. In addition, direct physical therapy (such as radio frequency, microwave, argon-helium knife, radioactive particle placement, etc.) for lesions through puncture technology is also increasingly being widely used clinically. Therefore, the puncturing method and the puncturing device are important in the puncturing technique.
The puncture technique is widely used as a minimally invasive technique in the global scope. The existing puncture coaxial trocar consists of a needle tube and a needle core, wherein the needle core is penetrated into a sleeve and screwed up by threads for puncture, the sleeve is reserved after a needle point reaches a preset position, the needle core is pulled out, the sleeve is used as a channel, and corresponding instruments such as a biopsy needle, a radio frequency, microwave and argon-helium knife ablation needle, the needle tube for placing radioactive particles and the like are penetrated into the sleeve for surgical operation. And the operation can be repeatedly operated due to the channel formed by the reserved coaxial puncture needle sleeve.
Referring to fig. 1, a chinese utility model patent publication No. CN202069613U discloses a double-wing coaxial puncture needle, comprising: the puncture outer tube is a hollow tube body; the puncture inner needle is provided with a needle head at one end, the length of the puncture inner needle is greater than that of the puncture outer tube, and the puncture inner needle penetrates through the puncture outer tube; the transverse positioning wing is a sheet-shaped wing and is arranged at the reverse end of the puncture inner needle opposite to the needle head; and the longitudinal positioning wing is a sheet-shaped wing, is perpendicular to the transverse positioning wing and is arranged at the reverse end of the puncture inner needle opposite to the needle head.
The length of the puncture needle in the prior art is not adjustable, and the puncture needles with different lengths need to be replaced according to needs in the using process, so that the use is inconvenient.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an adjustable coaxial puncture needle with adjustable length, simple structure and convenient use.
For reaching above-mentioned advantage, the utility model provides a coaxial pjncture needle with adjustable, locate needle, cover in the puncture sleeve outside the needle, the sleeve upper end be equipped with needle swing joint's regulation seat in the puncture, the needle is equipped with adjustment mechanism in the puncture, adjust the seat be equipped with the spacing groove that adjustment mechanism corresponds, through control adjustment mechanism in the position of spacing groove is adjusted the length of needle in the puncture.
In an embodiment of the present invention, the adjusting mechanism is a pair of cylindrical sliding blocks, the limiting groove is composed of a pair of spiral sliding ways, and the sliding blocks rotate in the sliding ways to enable the puncture inner needle to realize needle withdrawing or needle returning.
In an embodiment of the utility model, the puncture inner needle is provided with a fixed head at the upper end for controlling the motion of the puncture inner needle.
In one embodiment of the present invention, the lower end of the inner piercing needle is provided with a pointed portion, and the pointed portion has a tapered section.
In an embodiment of the present invention, the adjusting mechanism is an adjusting block, the limiting groove includes a first transverse groove, a second transverse groove, and a vertical groove, and when the adjusting block is moved from the first transverse groove to the second transverse groove, the length of the inner puncture needle is shortened.
In an embodiment of the present invention, the first transverse groove and the second transverse groove are respectively provided with a limiting protrusion corresponding to the adjusting block.
In an embodiment of the present invention, the spine portion further has an inwardly concave curved surface.
In an embodiment of the present invention, the limiting groove is spiral, the adjusting seat and the adjusting mechanism are in threaded connection, the adjusting mechanism is a limiting ring, one side of the limiting ring is provided with a limiting hole, and a compression spring and a limiting ball are arranged in the limiting hole.
In an embodiment of the present invention, the limiting groove is provided with a plurality of semicircular notches corresponding to the limiting balls.
In an embodiment of the present invention, the compression spring is used to make the limiting ball and the notch keep limiting, and the length of the puncture inner needle is controlled by rotating the fixing head or the adjusting seat.
The utility model discloses in, adjust the length of needle in the puncture through the position of control adjustment mechanism in spacing groove, make this coaxial pjncture needle have adjustable length, simple structure, convenient to use's beneficial effect.
Drawings
Fig. 1 is a schematic view of a prior art double winged coaxial needle.
Fig. 2 is a schematic view of an adjustable coaxial introducer needle according to a first embodiment of the invention.
Fig. 3 is a cross-sectional view of the adjustable coaxial introducer needle of fig. 2.
Fig. 4 is a cross-sectional view of the adjustment block of the adjustable coaxial introducer needle of fig. 2.
Fig. 5 is a schematic view of an adjustable coaxial introducer needle according to a second embodiment of the invention.
Fig. 6 is a cross-sectional view of the adjustable coaxial introducer needle of fig. 5.
Fig. 7 is a cross-sectional view of the hub of an adjustable coaxial introducer needle according to a third embodiment of the present invention.
Fig. 8 is a cross-sectional view of an adjustable coaxial introducer needle in accordance with a fourth embodiment of the present invention.
Fig. 9 is an enlarged partial view of the adjustable coaxial needle a of fig. 8.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the intended purpose of the present invention, the following detailed description will be given with reference to the accompanying drawings and preferred embodiments in order to provide the best mode, structure, features and effects according to the present invention.
Referring to fig. 2 and 3, the adjustable coaxial puncture needle according to the first embodiment of the present invention includes a puncture inner needle 1 and a sleeve 2 covering the puncture inner needle 1, wherein the upper end of the sleeve 2 is provided with an adjusting seat 3 movably connected to the puncture inner needle 1, the puncture inner needle 1 is provided with an adjusting mechanism a, the adjusting seat 3 is provided with a limiting groove 31 corresponding to the adjusting mechanism a, and the length of the puncture inner needle 1 is adjusted by controlling the adjusting mechanism a to be located at the position of the limiting groove 31.
Referring to fig. 4, the upper end of the sleeve 2 has a connector 24, and the adjusting seat 3 is detachably connected with the connector 24 by screw threads. The adjusting mechanism a is a pair of cylindrical sliding blocks 7, the limiting groove 31 is composed of a pair of spiral slide ways 8, and the sliding blocks 7 rotate in the slide ways 8 to enable the puncture inner needle 1 to realize needle withdrawing or needle returning.
The length of the puncture inner needle 1 is larger than that of the sleeve 2, the puncture inner needle 1 and the sleeve 2 are located on the same axis, and the upper end of the puncture inner needle 1 is provided with a fixed head 11 used for controlling the puncture inner needle 1 to move. The lower end of the puncture inner needle 1 is provided with a sharp part 12, and the sharp part 12 has a conical section 121. The surface of the sleeve 2 has a plurality of scale marks 23, and the depth of insertion is judged by observing the positions of the scale marks 23.
The length of the inner puncture needle 1 means the length of the pointed portion 12 beyond the lower end of the hub 2. When the length of the puncture inner needle 1 is adjusted, the slide block 7 rotates along the slide way 8, so that the puncture inner needle 1 moves up and down.
Referring to fig. 5 and 6, in a second embodiment of the present invention, the sleeve 2 and the adjusting seat 3 are integrally formed. The adjusting mechanism a is an adjusting block 4 extending from one side of the puncture inner needle 1, the limiting groove 31 comprises a first transverse groove 311, a second transverse groove 312 and a vertical groove 313, the length of the vertical groove 313 is the adjustable length of the puncture inner needle 1, the length of the puncture inner needle 1 is adjusted by controlling the position of the adjusting block 4 in the first transverse groove 311 or the second transverse groove 312, and when the adjusting block 4 moves from the first transverse groove 311 to the second transverse groove 312, the length of the puncture inner needle 1 is shortened.
The first transverse groove 311 and the second transverse groove 312 are respectively provided with a limiting protrusion 33 corresponding to the adjusting block 4, and the limiting protrusion 33 is used for enabling the adjusting block 4 to be located in the first transverse groove 311 or the second transverse groove 312.
When the length of the puncture inner needle 1 needs to be shortened, the adjusting block 4 is moved from the first transverse groove 311 to the vertical groove 313 by driving the fixing head 11, then the adjusting block 4 is moved upwards, at this time, the puncture inner needle 1 is shortened, and finally the adjusting block 4 is moved from the vertical groove 313 to the second transverse groove 312, at this time, the limiting bulge 33 limits the movement of the adjusting block 4, so that the puncture tip part 12 is shortened or retracted into the sleeve 2.
In the using process, the puncture inner needle 1 is driven by the fixing head 11, the adjusting block 4 is moved to a proper position, the sharp part 12 of the puncture inner needle 1 is positioned outside the lower end of the sleeve 2, then the sharp part 12 is aligned with the puncture part and inserted, and then whether the insertion depth is in place or not is judged by observing the scale marks 23, and sampling is carried out. The length-adjustable puncture inner needle 1 reduces the preparation quantity of instruments, and is convenient for a doctor to operate. Or when the puncture needle enters the body of a patient, the insertion depth of the puncture inner needle 1 is adjusted by changing the position of the adjusting block 4, so that the pain and injury caused by secondary puncture are avoided.
Referring to fig. 7, in a third embodiment of the present invention, the spine 12 further has an inwardly concave curved surface 122. Compared with the tapered section 121 of the second embodiment, the insertion angle of the sharp portion 12 of the present embodiment is smaller, the insertion is easier, and the pain of the patient during puncturing is less.
Referring to fig. 8 and 9, in the fourth embodiment of the present invention, the limiting groove 31 is spiral, the adjusting seat 3 is in threaded connection with the adjusting mechanism a, the adjusting mechanism a is a limiting ring 13 radially extending from the puncture inner needle 1, one side of the limiting ring 13 is provided with a limiting hole 131, and the limiting hole 131 has a compression spring 5 and a limiting ball 6 therein. The retainer groove 31 is provided with a plurality of semicircular notches 34 corresponding to the retainer balls 6.
The compression spring 5 is used for keeping the limiting ball 6 and the notch 34 limited, and the position of the limiting ring 13 in the limiting groove 31 is changed by rotating the fixing head 11 or the adjusting seat 3 until the adjusting mechanism a is limited with a certain notch 34, so that the length of the puncture inner needle 1 is controlled. Compared with the second embodiment, the embodiment is more convenient and stable through the rotation mode, and the precision of the length adjustment of the puncture inner needle 1 is improved through the limit action generated by the plurality of gaps 34.
The utility model discloses in, adjust the length of needle 1 in the puncture through the position of control adjustment mechanism a in spacing groove 31, make this coaxial pjncture needle have length adjustable, simple structure, convenient to use's beneficial effect.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above description, and although the present invention has been disclosed with the preferred embodiment, it is not limited to the present invention, and any skilled person can make modifications or changes equivalent to the above embodiments without departing from the scope of the present invention, but all the modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are within the scope of the present invention.
Claims (10)
1. The utility model provides a coaxial pjncture needle with adjustable, includes needle, cover locate in the puncture the outer sleeve of needle, its characterized in that, the sleeve upper end be equipped with needle swing joint's regulation seat in the puncture, the needle is equipped with adjustment mechanism in the puncture, adjust the seat be equipped with the spacing groove that adjustment mechanism corresponds, through control adjustment mechanism in the position of spacing groove is adjusted the length of needle in the puncture.
2. The adjustable coaxial needle of claim 1 wherein the adjustment mechanism is a pair of cylindrical slides and the limit groove is comprised of a pair of helical slides, and rotation of the slides within the slides causes the inner needle to be withdrawn or retracted.
3. The adjustable coaxial needle of claim 1 wherein said inner needle is provided at an upper end thereof with a fixed head for controlling movement of said inner needle.
4. The adjustable coaxial introducer needle of claim 1, wherein the lower end of the inner needle is provided with a spike having a conical cut.
5. The adjustable coaxial needle of claim 1 wherein the adjustment mechanism is an adjustment block and the retention slot comprises a first transverse slot, a second transverse slot, and a vertical slot, wherein the length of the inner needle decreases as the adjustment block moves from the first transverse slot to the second transverse slot.
6. The adjustable coaxial needle of claim 5 wherein the first and second transverse slots are each provided with a stop protrusion corresponding to the adjustment block.
7. The adjustable coaxial lancet of claim 4, wherein the spike further has a concave curved surface.
8. The adjustable coaxial needle of claim 3 wherein the retaining groove is spiral shaped, the adjustment base is threadably engaged with the adjustment mechanism, the adjustment mechanism is a retaining ring, one side of the retaining ring is provided with a retaining hole, and a compression spring and a retaining ball are disposed in the retaining hole.
9. The adjustable coaxial introducer needle of claim 8, wherein the retaining groove is provided with a plurality of semi-circular indentations corresponding to the retaining ball.
10. The adjustable coaxial needle of claim 9 wherein the compression spring is configured to maintain the stop ball in position with the notch, and wherein rotation of the fixed head or the adjustment knob controls the length of the inner needle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022103637.7U CN213850950U (en) | 2020-09-23 | 2020-09-23 | Adjustable coaxial puncture needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022103637.7U CN213850950U (en) | 2020-09-23 | 2020-09-23 | Adjustable coaxial puncture needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213850950U true CN213850950U (en) | 2021-08-03 |
Family
ID=77049597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022103637.7U Active CN213850950U (en) | 2020-09-23 | 2020-09-23 | Adjustable coaxial puncture needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213850950U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023077539A1 (en) * | 2021-11-08 | 2023-05-11 | 衡阳市大井医疗器械科技有限公司 | Surgical navigation apparatus and navigation method thereof |
-
2020
- 2020-09-23 CN CN202022103637.7U patent/CN213850950U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023077539A1 (en) * | 2021-11-08 | 2023-05-11 | 衡阳市大井医疗器械科技有限公司 | Surgical navigation apparatus and navigation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9968337B2 (en) | Coring tissue biopsy needle and method of use | |
| US5057085A (en) | Stabilized aspiration biopsy needle assembly | |
| US8900238B2 (en) | Devices and methods for inserting a vertebral fixation member | |
| US20120022568A1 (en) | Instrument for Use in Bone and Method of Use | |
| US10231716B2 (en) | Apparatus and methods for aspirating tissue | |
| WO1997034531A1 (en) | Improved biopsy needle set | |
| CN104887297B (en) | Needle-guide positioner special for internal arteriovenous fistula puncture | |
| CN213850950U (en) | Adjustable coaxial puncture needle | |
| KR20180026729A (en) | MRI biopsy system | |
| CN201743745U (en) | Multiplex trocar for percutaneous puncture | |
| CN205493985U (en) | Pedicle of vertebral arch screw general is put to bind and is put | |
| KR20190044452A (en) | Thread insert tool | |
| CN202086546U (en) | Bone marrow puncture biopsy needle | |
| CN111920457A (en) | Biopsy needle | |
| US11717318B2 (en) | Nested needles for spinal cyst treatment | |
| CN215079358U (en) | Universal lock target adjusting combination device for spinal endoscope | |
| CN202537600U (en) | Adjustable intervertebral disc exsector kit | |
| CN211883978U (en) | Nerve blocking needle capable of achieving accurate needle insertion | |
| CN111202567A (en) | Adjustable spinal minimally invasive intradermal positioning device | |
| CN219742836U (en) | Orthopedics pjncture needle integrating puncture biopsy and seed implantation functions | |
| CN208160627U (en) | A kind of bone tumour biopsy syste | |
| CN214208452U (en) | Improved apparatus of percutaneous vertebroplasty anesthesia injection and puncture tool combination | |
| CN2796659Y (en) | Discopathy laser gasified puncture needle | |
| CN206642194U (en) | Inner injector under a kind of cystoscope | |
| CN215079429U (en) | Puncture positioning auxiliary device before pulmonary tuberculoscope |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |