CN216724623U - Acellular dermal matrix guide needle - Google Patents
Acellular dermal matrix guide needle Download PDFInfo
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- CN216724623U CN216724623U CN202122748198.XU CN202122748198U CN216724623U CN 216724623 U CN216724623 U CN 216724623U CN 202122748198 U CN202122748198 U CN 202122748198U CN 216724623 U CN216724623 U CN 216724623U
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- needle
- guide
- dermal matrix
- acellular dermal
- introducer
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Abstract
The utility model discloses a acellular dermal matrix guide needle, which comprises a guide needle tube and a needle core, wherein the needle core can penetrate through the guide needle tube, a needle head at the front end of the guide needle tube is a closed blunt head, a needle hole is formed in the circumferential wall of the needle head, a needle seat is arranged at the tail end of the guide needle tube, and a connecting external thread is arranged at the tail end of the needle seat. The utility model has the advantages of convenient operation, accuracy and safety.
Description
Technical Field
The utility model relates to a medical apparatus in the field of cosmetology and plastic surgery, in particular to an acellular dermal matrix guide needle.
Background
The acellular dermal matrix is obtained by removing epidermal cell components from allogeneic or xenogeneic dermis by a method such as trypsinization. The collagen fiber bundle-containing composite material comprises a normal skin collagen fiber bundle and a complete basement membrane structure, has strong biocompatibility and lower immunogenicity, and can be used as an induction bracket for re-planting receptor fibroblasts and vascular endothelial cells. Is applied to covering or filling the wound surface of the subjects of burning, reshaping, oral cavity and the like.
The acellular dermal matrix is in a flat strip shape, so that the acellular dermal matrix is easy to shift during transplantation to cause uneven transplantation, the transplantation speed is very slow, the time spent in an operation is long, and the operation risk is increased.
SUMMERY OF THE UTILITY MODEL
The present invention aims to provide an acellular dermal matrix introducer needle. The utility model has the advantages of convenient operation, precision and safety.
The technical scheme of the utility model is as follows: the acellular dermal matrix guide needle comprises a guide needle tube and a needle core, wherein the needle core can penetrate through the guide needle tube, a needle head at the front end of the guide needle tube is a closed blunt head, a needle hole is formed in the circumferential wall of the needle head, a needle seat is arranged at the tail end of the guide needle tube, and a connecting external thread is arranged at the tail end of the needle seat.
In the above-mentioned acellular dermal matrix introducer needle, the needle hole has an oval shape.
In the acellular dermal matrix introducer needle, the needle hole is 3-5cm away from the needle head.
In the acellular dermal matrix introducer needle, one end of the needle core is fixedly connected with the handle, and an internal thread is arranged in the handle and matched with an external connecting thread on the needle base.
In the above acellular dermal matrix introducer needle, the head of the other end of the needle core is spherical.
In the above-mentioned acellular dermal matrix introducer needle, the length of the needle core is the same as that of the introducer needle tube.
In the acellular dermal matrix introducer needle, a truncated cone-shaped guide hole is formed in one side of the needle base, which is close to the connecting external thread.
In the above acellular dermal matrix introducer needle, a guide plug is provided in the handle and is engaged with the guide hole.
In the above acellular dermal matrix introducer needle, the introducer plug is fixedly connected to the needle core.
Compared with the prior art, the utility model adopts the blunt closed needle head through the guide needle tube, muscle tissues are not easy to be injured in the process of inserting and pulling the needle tube, the needle tube is matched with the needle core, and the needle core is used for propping the needle head to buckle the fixed strip-shaped acellular dermal matrix, so that the transplantation can be rapidly completed, and the utility model is very convenient.
Further, the oval needle hole facilitates insertion into the flat cord-like acellular dermal matrix.
Furthermore, through set up the internal thread in the handle of nook closing member, the internal thread in the handle is screwed up the lock with the connection external screw thread on the needle file and is died, prevents that acellular dermal matrix from taking off, makes the transplantation in-process, and is more safe convenient.
Furthermore, a guide hole is added on the needle base and a guide plug is added in the handle of the needle core, so that the operation is guided and more accurate.
In conclusion, the utility model has the advantages of convenient operation, precision and safety.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic illustration of the present invention in operation;
FIG. 3 is a cross-sectional view of the structure of the introducer needle cannula of the present invention;
fig. 4 is a structural sectional view of the stylet of the utility model.
The labels in the figures are: 1-guide needle tube, 11-needle hole, 12-needle seat, 13-connecting external thread, 14-guide hole, 15-needle head, 2-needle core, 21-handle, 22-internal thread, 23-guide plug and A-acellular dermal matrix.
Detailed Description
The utility model is further illustrated by the following figures and examples, which are not to be construed as limiting the utility model.
Examples are given. A acellular dermal matrix guide needle is shown in figures 1 to 4 and comprises a guide needle tube 1 and a needle core 2, wherein the needle core 2 can penetrate through the guide needle tube 1, a needle head 15 at the front end of the guide needle tube 1 is a closed blunt head, a needle hole 11 is formed in the circumferential wall of the needle head 15, a needle seat 12 is arranged at the tail end of the guide needle tube 1, and a connecting external thread 13 is arranged at the tail end of the needle seat 12.
The needle hole 11 is oval, and the distance between the needle hole 11 and the needle head 15 is 3-5 cm.
One end of the needle core 2 is fixedly connected with a handle 21, an internal thread 22 is arranged in the handle 21, and the internal thread 22 is matched with the external connecting thread 13 on the needle base 12.
The head of the other end of the needle core 2 is in a spherical shape.
The length of the needle core 2 is the same as that of the guide needle tube 1.
One side of the needle base 12 close to the connecting external thread 13 is provided with a circular truncated cone-shaped guide hole 14.
The handle 21 is provided with knurling stripes on the outer circumference.
A guide plug 23 matched with the guide hole 14 is arranged in the handle 21.
The guide plug 23 is fixedly connected with the stylet 2.
The using method comprises the following steps: a section of cord-shaped acellular dermal matrix A is plugged into the front end of a guide needle tube 1 through a needle hole 11, a cord-shaped acellular dermal matrix A is fastened by a guide needle core 2, the handle internal thread 22 of the needle core and the needle seat connecting external thread 13 are used for screwing down a handle 21, and the needle core 2 and the guide needle tube 1 are locked.
Then, after the needle 15 penetrates the graft site, the thread of the handle 21 is unscrewed, the needle core 2 is pulled out, the cord-like acellular dermal matrix A is loosened, and then the guide needle tube 1 is pulled out to complete the transplantation of the acellular dermal matrix.
Claims (8)
1. An acellular dermal matrix introducer needle, comprising: including guide needle tubing (1) and nook closing member (2), nook closing member (2) can pass guide needle tubing (1), syringe needle (15) of guide needle tubing (1) front end are closed blunt head, have seted up pinhole (11) on the circumference wall of syringe needle (15), and the end of guide needle tubing (1) is equipped with needle file (12), and the end of needle file (12) is equipped with connects external screw thread (13), needle file (12) are close to and connect external screw thread (13) one side and are equipped with guiding hole (14) that the round platform was described.
2. The acellular dermal matrix introducer needle according to claim 1, characterized in that: the pinhole (11) is oval.
3. The acellular dermal matrix introducer needle according to claim 1, wherein: the distance between the needle hole (11) and the needle head (15) is 3-5 cm.
4. The acellular dermal matrix introducer needle according to claim 1, characterized in that: one end fixed connection handle (21) of nook closing member (2), be equipped with internal thread (22) in handle (21), internal thread (22) with connect external screw thread (13) cooperation on needle file (12).
5. The acellular dermal matrix introducer needle according to claim 1, wherein: the head of the other end of the needle core (2) is spherical.
6. The acellular dermal matrix introducer needle according to claim 1, characterized in that: the length of the needle core (2) is the same as that of the guide needle tube (1).
7. The acellular dermal matrix introducer needle according to claim 4, characterized in that: a guide plug (23) matched with the guide hole (14) is arranged in the handle (21).
8. The acellular dermal matrix introducer needle according to claim 7, characterized in that: the guide plug (23) is fixedly connected with the stylet (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122748198.XU CN216724623U (en) | 2021-11-10 | 2021-11-10 | Acellular dermal matrix guide needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122748198.XU CN216724623U (en) | 2021-11-10 | 2021-11-10 | Acellular dermal matrix guide needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216724623U true CN216724623U (en) | 2022-06-14 |
Family
ID=81925444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122748198.XU Active CN216724623U (en) | 2021-11-10 | 2021-11-10 | Acellular dermal matrix guide needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216724623U (en) |
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2021
- 2021-11-10 CN CN202122748198.XU patent/CN216724623U/en active Active
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