CN210019563U - Expansion guide needle - Google Patents
Expansion guide needle Download PDFInfo
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- CN210019563U CN210019563U CN201920633306.9U CN201920633306U CN210019563U CN 210019563 U CN210019563 U CN 210019563U CN 201920633306 U CN201920633306 U CN 201920633306U CN 210019563 U CN210019563 U CN 210019563U
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- needle
- section
- expansion
- expansion section
- guide
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Abstract
The utility model relates to an expansion guide needle, which comprises a needle head 10, an expansion section 20, a needle rod 30 and a needle handle 40, wherein the needle head is provided with a threading hole 11, one end of the expansion section is connected with the needle head, the external dimension of the expansion section is larger than the diameter of the needle head, the other end of the expansion section is connected with the needle rod, and the needle rod is connected with the needle handle; the cross sections of the expanding section and the needle handle are elliptical with the same shape and direction. The utility model has the advantages that: the guide needle adopts a thin needle head, so that local trauma is reduced when the needle penetrates through facial skin, and obvious scars are not left; the guide needle with the expansion section is adopted, and a widened channel can be formed when the guide needle penetrates through the subcutaneous part, so that a biological band can smoothly pass through the guide needle, and the operation is obviously facilitated; the threading direction of the threading hole is parallel to the flat side plane of the expansion section, so that threading is more convenient; the cross-sectional shape and direction of the needle handle are the same as those of the expanding section, so that an operator can accurately judge and control the rotating direction of the expanding section.
Description
Technical Field
The utility model belongs to a plastic operation instrument, in particular to an expansion guide needle.
Background
The acellular allogenic dermis is obtained from cadaver skin, the epidermis on the surface and the fat on the deep surface are removed, only the dermis component is contained, and after the acellular allogenic dermis is subjected to acellular treatment and transplanted into a human body, the acellular allogenic dermis has no rejection reaction and is widely applied to burn, general surgery and oral surgery. It has been used in cosmetic surgery in recent years, including vaginal tightening in gynecology, penis thickening in men, etc. The acellular allogeneic dermis is a good facial suspension material, is made into a strip (called a biological strip, compared with the conventional suture material) with the width of 5mm and the thickness of 0.5mm, and can be used for facial lifting. When the novel expansion guide needle is used for the operation, the wound can be smaller, the biological bridle can more smoothly pass under the skin, and the face is basically not left with scars. The operation method comprises the following steps: adopting a biological band with the front end connected with a guide wire, firstly internally cutting two small incisions (an incision A and an incision B) in the scalp hairline, inserting a guide needle with a guide wire tied in a needle hole into the incision A, penetrating out of the needle head at a part (a point C of the face) to be suspended, pulling out the guide wire from the needle head, and pulling out the guide needle; then, a guide needle is inserted into the subcutaneous part (without a guide silk thread at the moment) from an incision point B in the hairline, a needle head penetrates out from a point C, the guide silk thread penetrates into a needle hole and is knotted, the guide needle is pulled out from the incision point B together with the guide silk thread, the guide silk thread drives the biological belt to be pulled out from the incision point B, the biological belt is buried under the skin in a V shape (passing through the incision A-the incision C-the incision B), two ends of the biological belt are tensioned at the incision A and the incision B, and the skin at the point C is lifted, so that the purpose of lifting is. However, one technical obstacle to such a current operation is that there is no guiding needle suitable for pulling a biological band 5mm wide, and only a common surgical instrument can be used as a guide, but the common instrument cannot satisfy two points at the same time: 1. a channel with enough width is formed under the skin, so that a biological band with the width of 5mm can pass through the channel smoothly, and 2, only a tiny needle hole is formed in the facial skin, so that scars at the later stage are not obvious.
Disclosure of Invention
The utility model aims at providing an expansion guide needle's technical scheme improves the convenience that biological band face suspended surgery, reduces the operation wound.
In order to realize the purpose, the technical scheme of the utility model is that: an expansion guide needle comprises a needle head, an expansion section, a needle rod and a needle handle, wherein the needle head is provided with a threading hole, one end of the expansion section is connected with the needle head, the overall dimension of the expansion section is larger than the diameter of the needle head, the other end of the expansion section is connected with the needle rod, and the needle rod is connected with the needle handle.
Further, a preferable structure of the needle is that the diameter of the needle is 1.0mm to 1.5mm, and the length of the needle is 20 mm.
Further, in order to dilate subcutaneous tissue, the dilating segment is a drum-shaped dilating segment connecting the needle head and the needle shaft, the outer diameter of the widest part of the dilating segment is not more than 5mm, and the length of the dilating segment is 20 mm.
Still further, it is advantageous to dilate the subcutaneous tissue upon insertion, the cross-section of the dilating segment is elliptical, the major axis of the cross-section ellipse at the widest point of the dilating segment is 5mm, and the minor axis of the cross-section ellipse at the widest point of the dilating segment is 3 mm.
Furthermore, in order to guide the silk thread to pass through the needle hole conveniently, the axial direction of the threading hole is parallel to the long axis direction of the section ellipse at the widest part of the expansion section.
Furthermore, in order to accurately judge and control the rotation direction of the expansion section during operation, the section of the needle handle is an ellipse which is the same as the section of the widest part of the expansion section, and the long axis of the ellipse of the section of the needle handle is parallel to the long axis of the ellipse of the section of the widest part of the expansion section.
Furthermore, in order to provide the needle shaft with a good structural rigidity, the diameter of the needle shaft is larger than that of the needle head.
Still further, a preferred shank size is one in which the shank has a diameter of 2 mm.
Further, a preferred needle shaft length is that the needle shaft length is 70 mm.
The utility model has the advantages that: the guide needle adopts a thin needle head, so that local trauma is reduced when the needle penetrates through facial skin, and obvious scars are not left; the guide needle with the expansion section is adopted, and a widened channel can be formed when the guide needle penetrates through the subcutaneous part, so that a biological band can smoothly pass through the guide needle, and the operation is obviously facilitated; the axial direction of the threading hole is parallel to the major axis direction of the section ellipse at the widest part of the expansion section, so that threading is more convenient; the long axis direction of the cross section ellipse at the widest position of the needle handle is consistent with the long axis direction of the cross section ellipse at the widest position of the expansion section, so that an operator can accurately judge and control the rotation direction of the expansion section according to the direction of the needle handle.
The present invention will be described in detail with reference to the accompanying drawings and examples.
Drawings
FIG. 1 is a block diagram of the present invention;
fig. 2 is a side view of the present invention, which is a view perpendicular to the major axis of the cross-section of the expanding section;
fig. 3 is a side view of the present invention, which is a view perpendicular to the direction of the minor axis of the cross-section of the expanding section;
FIG. 4 is a schematic representation of the operation of the present invention, with the guide wire tied at the needle site, to cut two smaller incisions, incision A and incision B, in the scalp hairline;
FIG. 5 is an operational view of the present invention, showing the needle inserted into the incision A and the needle extended out at the point C on the face;
FIG. 6 is a schematic view of the operation of the present invention, wherein a guiding needle is inserted subcutaneously from the incision B, a needle head is extended from the point C, and a silk thread is inserted into the needle hole and knotted;
FIG. 7 is an operational view of the present invention, showing the guide needle with the guide wire pulled out of the incision B;
FIG. 8 is a schematic view showing the operation of the present invention, wherein the guiding thread is connected with the biological band, and the biological band is embedded under the skin in a V shape.
Detailed Description
Referring to fig. 1 to 3, an expansion guide needle comprises a needle head 10, an expansion section 20, a needle rod 30 and a needle handle 40, wherein the needle head is provided with a threading hole 11, one end of the expansion section is connected with the needle head, the external dimension of the expansion section is larger than the diameter of the needle head, the other end of the expansion section is connected with the needle rod, and the needle rod is connected with the needle handle.
The diameter d1 of the needle head is 1.0 mm-1.5 mm, and the length L1 of the needle head is 20 mm.
The dilating segment is a drum-shaped dilating segment connecting the needle and the needle rod, the outer diameter d2 at the widest part of the dilating segment is not more than 5mm, and the length L2 of the dilating segment is 20 mm.
The section 21 of the expanding section is an ellipse, the major axis d2 of the section ellipse at the widest position of the expanding section is 5mm, and the minor axis d3 of the section ellipse at the widest position of the expanding section is 3 mm.
The axial direction 13 of the threading hole is parallel to the direction of the major axis 22 of the section ellipse at the widest part of the expansion section.
The section 41 of the needle handle is an ellipse which is the same as the section at the widest part of the expansion section, and the long axis of the ellipse of the section of the needle handle is parallel to the long axis of the ellipse of the section at the widest part of the expansion section.
The diameter d4 of the needle shaft is larger than the diameter of the needle head.
The diameter d4 of the needle shaft is 2 mm.
The length L3 of the needle handle is 70 mm.
The first embodiment is as follows:
referring to fig. 1 to 3, an expanding introducer needle includes a needle head 10, an expanding section 20, a needle shaft 30 and a needle handle 40.
The needle is provided with a needle point 12, a threading hole (or called a needle hole) 11 is arranged at the position close to the needle point, the diameter d1 of the needle is 1.2mm, and the length L1=20 mm.
The front end of the expansion section is connected with the needle head, the rear end of the expansion section is connected with the needle rod, the overall dimension of the expansion section is larger than the diameter of the needle head, namely the section dimension of the maximum position of the expansion section is larger than the diameter of the needle head, so that the expansion section can expand the through hole of the needle head penetrating through subcutaneous tissues. The cross-sectional shape of the dilating segment may take many forms, such as circular, but preferably, the cross-section 21 of the dilating segment is elliptical, and the shape of the dilating segment is crowned (2 a in fig. 2 and 2b in fig. 3) to connect the needle and the needle shaft, which is advantageous for dilating subcutaneous tissue during insertion. To match the biological band, it is preferable to have a structure in which the outer diameter d2 at the widest part of the dilating segment is not more than 5mm and the length L2 of the dilating segment is 20mm, depending on the surgical experience and practice. In this embodiment, the major axis d2=5mm of the ellipse of the cross section 21 at the widest point of the divergent section, and the minor axis d3=3mm of the ellipse of the cross section 21 at the widest point of the divergent section. Therefore, the external dimension of the expansion section is larger than the diameter d1 of the needle, so that the expansion section can expand subcutaneous tissues along with the needle to expand a channel for the biological belt. The adoption of the expansion section with the oval cross section can widen a flat and wide channel in subcutaneous tissues, is more suitable for the passing of flat biological bands, and reduces the damage to the subcutaneous tissues.
To provide the dilating introducer needle with good overall structural rigidity, the diameter d4 of the needle shaft is larger than the diameter of the needle tip. In this embodiment, the diameter d4=2mm of the needle shaft.
The back end of the needle rod is connected with the needle handle. The length of the needle shaft, L3=70mm, the needle shaft of 70mm length has better operability according to medical practice. The section 41 of the needle handle is an ellipse which is the same as the section of the widest part of the expansion section, the ellipse long axis of the section of the needle handle is parallel to the ellipse long axis of the section of the widest part of the expansion section, namely, the section shape and the arrangement direction of the needle handle are the same as the expansion section, so that better operation hand feeling can be provided for an operator, and the operator can accurately judge and control the rotation direction of the expansion section according to the direction of the needle handle.
The axial direction 13 of the threading hole is parallel to the direction of the major axis 22 of the section ellipse at the widest part of the expansion section. I.e. the direction of the threading hole is parallel to the wider direction of the expansion section.
As shown in fig. 4, in the case of performing the biological band facial suspension operation, a biological band 60 having a leading end connected to a guide wire 61 and a width K =5mm is used, and the guide wire is passed through the needle hole 11 and tied at the needle hole. Two smaller incisions (a incision, B incision) were made in the scalp hairline.
As shown in fig. 5, a guide needle with a silk thread in the needle hole is inserted into the incision A, the needle head is penetrated out from the part needing to be suspended (the face point C), the expansion section is not penetrated out of the skin, the silk thread is pulled out of the needle head, and the guide needle is pulled out.
The introducer needle is then inserted subcutaneously through the B incision in the hairline (without the guide wire), the needle is removed at point C, the wire is passed through the needle hole and tied off, as shown in FIG. 6.
The expansion section is inserted into subcutaneous tissue in a direction that the long axis of the ellipse of the section of the expansion section is parallel to the epidermis, and when the needle head penetrates out of the facial point C, the axis of the threading hole (the threading direction of the threading hole) is parallel to the epidermis, so that threading is more convenient.
As shown in fig. 7 and 8, the guide needle is pulled out from the point B, the guide needle is connected with the guide thread and is pulled out together with the biological belt, the biological belt is embedded under the skin in a V shape (through the incision A-the incision C-B on the face), the biological belt is tensioned at the incision A and the incision B, and the skin at the point C is lifted up to achieve the purpose of lifting. By adopting the dilating guide needle of the embodiment, a channel with enough width can be formed under the skin, so that a biological band with the width of 5mm can pass through the channel smoothly; only a small pinhole (point C) was made in the facial skin, making the late scarring less noticeable.
Claims (9)
1. An expansion guide needle is characterized by comprising a needle head, an expansion section, a needle rod and a needle handle, wherein the needle head is provided with a threading hole, one end of the expansion section is connected with the needle head, the overall dimension of the expansion section is larger than the diameter of the needle head, the other end of the expansion section is connected with the needle rod, and the needle rod is connected with the needle handle.
2. An expansion introducer needle according to claim 1, characterized in that the diameter of the needle is 1.0mm to 1.5mm and the length of the needle is 20 mm.
3. An expansion introducer needle according to claim 1, characterized in that the expansion section is a drum-shaped expansion section connecting the needle head and the needle shaft, the outer diameter of the widest part of the expansion section is not more than 5mm, and the length of the expansion section is 20 mm.
4. A dilatation introducer needle according to claim 3, wherein the cross-section of the dilatation section is elliptical, the major axis of the cross-section ellipse at the widest part of the dilatation section is 5mm and the minor axis of the cross-section ellipse at the widest part of the dilatation section is 3 mm.
5. The dilating introducer needle as claimed in claim 4, wherein the axial direction of the threading hole is parallel to the major axis direction of the cross-sectional ellipse at the widest part of the dilating segment.
6. An expansion introducer needle according to claim 4, wherein the cross section of the needle handle is elliptical in the same manner as the cross section at the widest point of the expansion section, and the major axis of the ellipse of the cross section of the needle handle is parallel to the major axis of the ellipse of the cross section at the widest point of the expansion section.
7. An expansion introducer needle according to claim 1, wherein the diameter of the needle shaft is greater than the diameter of the needle tip.
8. An expansion introducer needle according to claim 6, characterized in that the diameter of the needle shaft is 2 mm.
9. An expansion introducer needle according to claim 1, characterized in that the needle shaft has a length of 70 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920633306.9U CN210019563U (en) | 2019-05-06 | 2019-05-06 | Expansion guide needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920633306.9U CN210019563U (en) | 2019-05-06 | 2019-05-06 | Expansion guide needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210019563U true CN210019563U (en) | 2020-02-07 |
Family
ID=69363495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920633306.9U Expired - Fee Related CN210019563U (en) | 2019-05-06 | 2019-05-06 | Expansion guide needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210019563U (en) |
-
2019
- 2019-05-06 CN CN201920633306.9U patent/CN210019563U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200207 Termination date: 20210506 |
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| CF01 | Termination of patent right due to non-payment of annual fee |