CN117679094A - Disposable puncture closer - Google Patents
Disposable puncture closer Download PDFInfo
- Publication number
- CN117679094A CN117679094A CN202311712844.4A CN202311712844A CN117679094A CN 117679094 A CN117679094 A CN 117679094A CN 202311712844 A CN202311712844 A CN 202311712844A CN 117679094 A CN117679094 A CN 117679094A
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- CN
- China
- Prior art keywords
- nail pushing
- puncture
- nail
- pushing rod
- rod
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- 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.)
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- 239000002184 metal Substances 0.000 claims description 17
- 230000007704 transition Effects 0.000 claims description 3
- 238000002513 implantation Methods 0.000 abstract description 4
- 210000003195 fascia Anatomy 0.000 description 12
- 210000000683 abdominal cavity Anatomy 0.000 description 8
- 230000015556 catabolic process Effects 0.000 description 5
- 238000006731 degradation reaction Methods 0.000 description 5
- 210000003815 abdominal wall Anatomy 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000001356 surgical procedure Methods 0.000 description 3
- 208000015181 infectious disease Diseases 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 238000002357 laparoscopic surgery Methods 0.000 description 2
- 210000001835 viscera Anatomy 0.000 description 2
- 206010019909 Hernia Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 210000001015 abdomen Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 238000013132 cardiothoracic surgery Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000002682 general surgery Methods 0.000 description 1
- 230000035876 healing Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
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- Surgical Instruments (AREA)
Abstract
The invention relates to a disposable puncture closer, and relates to the technical field of medical appliances. The disposable puncture closer comprises a puncture cone, a guide block, a nail pushing rod, a central rod, a long spring, a suture nail and a nail pushing handle. The puncture closer can ensure that the stress of the long spring is in the center of the instrument, and overcomes the technical problem that the existing disposable puncture closer is difficult to fire; the long spring is arranged inside the nail pushing rod, so that space is saved, meanwhile, the limit of the minimum distance of the nail pushing rod is also relieved, the stitching distance is effectively increased, and the risk that stitching nails fall from an incision is reduced; and the overall implantation amount of the stitching nails is small, so that the risk of adhesion is reduced.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a disposable puncture closer.
Background
The laparoscopic surgery has the advantages of small trauma, small physiological interference to patients, good beautifying effect, light pain, quick rehabilitation and the like, gradually replaces the traditional surgery, and has been widely applied to general surgery, gynecology and cardiothoracic surgery. Laparoscopic surgery requires an incision in the abdomen of a patient, surgery is performed under laparoscopic observation, and fascia suturing is performed after the surgery, and the suturing operation is difficult because of the characteristics of small incision, deep inner wall and the like. The existing solutions include manual suturing and fascia stapler suturing, wherein the manual suturing is suitable for lean patients, and for obese patients, the abdominal wall tissue is thick, and accurate and effective suturing of the puncture incision cannot be satisfied, so that a series of complications such as bleeding, infection, puncture hernia, injury and the like are caused. The fascia suture device can suture fascia of an obese patient, but the puncture outfit is pulled out first, then the fascia suture device is operated, the operation is complex, the operation time is long, and the risk of infection of the patient is increased.
In order to solve the above technical problems, beijing Tian-Dong-Chang medical technology Co., ltd, developed a laparoscopic puncture stapler which completed fascia stapling by staples and sutures. The puncture awl pierces the tissue, designs simultaneously and pushes away nail mechanism, and the staple is adorned on the sleeve pipe inner wall with the suture, accomplishes the arranging of staple suture before the art, uses to push away the nail stick and once fires, and the postoperative suture knot can be sewed up. As in the U-shaped ejector pin disclosed in CN110251175a, the internal structure limits cause that the ejected staples are closer to the incision, the probability of the staples entering the incision is very high, and the U-shaped ejector pin has no X, Y direction limitation on the long spring, and when the ejector pin is ejected, the long spring is twisted in other directions, resulting in dispersion of the elastic force of the long spring and difficult firing; in addition, from a structural point of view, the prior art staple dovetails have sharp portions, there may be a risk of lacerating viscera in the abdominal cavity and a risk of staple transection.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention aims to provide a disposable puncture closer.
The disposable puncture closer comprises a puncture cone, a guide block, a nail pushing rod, a central rod, a long spring, a suture nail and a nail pushing handle; the guide block, the center rod and the nail pushing rod are arranged in the puncture tube, the puncture cone is fixed at the front end of the puncture tube, the guide block is arranged at the rear end of the puncture cone, a nail pushing rod inner cavity is arranged in the rear part of the nail pushing rod, two nail pushing rods are arranged at the front part of the nail pushing rod, and a needle point is arranged at the front end of the nail pushing rod; the two nail pushing rods are supported and matched by the guide block, the front ends of the two nail pushing rods extend out of the puncture tube, the front ends of the two nail pushing rods are parallel to the axial direction of the puncture cone, and the suture sleeve is arranged on the needle point; the long spring is arranged in the inner cavity of the nail pushing rod, the side wall of the inner cavity is in clearance fit with the long spring, the rear end of the long spring is in contact with the bottom wall of the inner cavity of the nail pushing rod, the front end of the long spring is in contact with the rear end of the center rod, the front end of the center rod is connected with the rear end of the puncture cone, and the rear end of the center rod is positioned in the inner cavity of the nail pushing rod and can move relative to the inner cavity of the nail pushing rod; the nail pushing handle is connected with the nail pushing rod.
The distance between the front parts of the two nail pushing rods and the distance between the rear parts of the two nail pushing rods are larger than the minimum distance.
Wherein the minimum distance Lmin is 2-8mm.
Wherein the needle tip is a metal needle tip.
Wherein, the taper of the front end of the suture nail is in transition fit with the taper of the metal needle point.
The rear end of the guide block is provided with an inclined plane structure, and when the nail pushing rod advances forwards, the two nail pushing rods are supported by the inclined plane structure of the guide block, so that the distance between the metal needle point of the nail pushing rod and the puncture cone is 7-20mm.
The outer surface of the suture nail is of a smooth arch structure, the inside of the suture nail is provided with a shaft hole matched with the metal needle point, and the suture nail is provided with a round hole for connecting a suture.
The rear end of the nail pushing rod is provided with a steering sheet, and the handle is connected with the steering sheet through a pin.
Wherein, the nail pushing rod is of a Y-shaped nail pushing structure.
Compared with the prior art, the disposable puncture closer has the following beneficial effects:
the puncture closer can ensure that the stress of the long spring is in the center of the instrument, and overcomes the technical problem that the existing disposable puncture closer is difficult to fire; the long spring is arranged in the nail pushing rod, so that space is saved, meanwhile, the limit of the minimum distance of the nail pushing rod is relieved, the stitching distance is effectively increased, and the risk of stitching nails falling from an incision is reduced; and the overall implantation amount of the stitching nails is small, so that the risk of adhesion is reduced.
Drawings
FIG. 1 is an isometric view of an assembly of the single use puncture closer of embodiment 1;
FIG. 2 is a sectional view showing the structure of the single-use puncture closer according to embodiment 1;
FIG. 3 is an enlarged view of a portion of the single-use puncture closer of embodiment 1;
FIG. 4 is a schematic view showing the structure of a first form of the ejector pin of example 1;
FIG. 5 is a schematic view showing the structure of a second form of the ejector pin of example 1;
FIG. 6 is a schematic view showing the structure of a third form of the ejector pin of example 1;
FIG. 7 is a view showing the structure of staples in the single-use puncture closer of embodiment 1;
FIG. 8 is a partial schematic view of the single-use puncture closer of embodiment 1;
FIG. 9 is a view showing the fitting structure of staples and a push rod in the single-use puncture closer according to embodiment 1;
fig. 10 is a schematic view showing the structure of a nail pushing rod in the single-use puncture closer of embodiment 1.
Detailed Description
The disposable puncture closure of the present invention will be further described with reference to specific embodiments and drawings to assist those skilled in the art in a more complete, accurate and thorough understanding of the present invention. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
The following detailed description of the embodiments of the invention, provided in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
As shown in fig. 1 to 9, the disposable puncture closer of the present embodiment comprises a puncture cone 1, a guide block 2, a nail pushing rod 3, a central rod 4, a long spring 5, a staple 6 and a nail pushing handle 7, wherein the guide block 2, the central rod 4 and the long spring 5 are all arranged in a puncture tube, the puncture cone 1 is fixed at the front end of the puncture tube, and the guide block 2 is arranged at the rear end of the puncture cone 1. As shown in fig. 10, the nail pushing rod 3 is of a Y-shaped design, a nail pushing rod inner cavity 32 is arranged in the rear portion of the nail pushing rod 3, two symmetrical nail pushing rods 33 are arranged in the front portion of the nail pushing rod 3, and a metal needle point 31 is arranged at the front end of the nail pushing rod 33. The ejector pin 33 is supported and matched by the guide block 2, the front end of the ejector pin 33 extends out of the puncture tube, the front end of the ejector pin 33 is parallel to the axial direction of the puncture cone 1, and the stitching nail 6 is sleeved on the metal needle point 31. The long spring 5 is arranged in the nail pushing rod inner cavity 32, the side wall of the nail pushing rod inner cavity 32 is in clearance fit with the long spring 5, the rear end of the long spring 5 is in contact with the bottom wall of the nail pushing rod inner cavity 32, the front end of the long spring 5 is in contact with the rear end of the center rod 4, the front end of the center rod 4 penetrates through the guide block 2 and then is connected with the rear end of the puncture cone 1, and the rear end of the center rod 4 is positioned in the nail pushing rod inner cavity 32 and can move relative to the nail pushing rod inner cavity 32. The rear end of the nail pushing rod 3 is provided with a steering piece 8, and the nail pushing handle 7 is connected with the steering piece 8 through a pin 9. As shown in fig. 4-6, in this embodiment, there is a minimum distance Lmin between the middle parts of two oppositely disposed push pin rods, where Lmin is 2-8mm, and this can be achieved by arranging the middle parts of the push pin rods to have a necking (as shown in fig. 4), an arc-shaped indent (fig. 5), a straight indent (fig. 6), and so on.
In the initial position, the staples 6 are accurately matched with the metal needle points 31 of the staple pushing rods 3, the minimum distance Lmin between the two staple pushing rods is 2-8mm, when the staples 6 are pushed out to pass through fascia, the staple pushing rods 33 are spread under the action of the inclined planes of the guide blocks 2, and the distance between the needle points of the staples 6 and the puncture cone, namely 7-20mm from the incision edge can be increased, so that the effective suturing distance can be increased. When the nail pushing rod 3 advances forwards, the minimum distance between the nail pushing rods 33 is 2-8mm, when the needle points of the nail pushing rods are parallel to the puncture cone and the distance between the needle points of the nail pushing rods and the puncture cone is 7-20mm, fascia is broken, and the distance between the needle points of the puncture cone and the incision edge is 7-20mm, namely, the distance between the positions of the staples and the incision edge is 7-20mm.
After the metal needle point 33 of the nail pushing rod 3 carries the staples 6 to enter the abdominal cavity, the central rod 4 extrudes the long spring 5, and the long spring 5 generates resilience force in the inner cavity 32 of the nail pushing rod, so that the whole nail pushing rod 3 is driven to exit the abdominal cavity and return to the inside of the puncture tube. In the structure, the long spring 5 is compressed by the center rod 4 in the inner cavity 32 of the nail pushing rod, so that the long spring 5 moves in the Z direction and simultaneously limits the displacement of the long spring in the X direction and the Y direction, and the stress of the long spring 5 is ensured to be in the center of the whole instrument.
As shown in fig. 9, the front end of the nail pushing rod 3 is provided with a metal needle point 31, after the nail pushing rod 3 breaks through fascia, the nail 6 is brought into the abdominal cavity, compared with the plastic needle point, the metal needle point 31 is sharper, after passing through the peritoneal membrane, the nail 6 is left in the abdominal cavity, and the metal needle point 31 is withdrawn; in order to prevent the staples 6 from scratching tissues and viscera in the abdominal cavity, as shown in fig. 7, the surface of the staples 6 is designed into a smooth arched structure, and a shaft hole is formed in the interior of the staples to facilitate the penetration of the metal needle tips 31 of the staple pushing bars 3 through the staples and the withdrawal of the staple pushing bars 3 out of the staples 6. The staples 6 are provided with two communicated round holes for connecting the suture, and the integral implantation amount of the staples is 10-40mm 3 The implantation amount is small so as to reduce the probability of adhesion. The taper of the front end of the suture nail 6 is in transition fit with the taper of the metal needle point 31, so that the abdominal wall can be conveniently penetrated.
The material of the stitching nail 6 is PGA, PLGA5050 or PGLA9010, the degradation time of the PGA, PLGA5050 or PGLA9010 is about 3 months, 1-2 months and 2 months respectively, the material of the stitching thread is PDO or PGCL, and the degradation time is 6 months and 3 months. The material combination mode of the stitching nail and the stitching thread can meet the requirements of fascia healing time and stitching thread degradation in preference to stitching thread in 14 days, the connection strength of the stitching thread and the stitching thread can meet the mechanical strength of maintaining more than 16N (abdominal wall tension) in 14 days, and the stitching thread can avoid the risk that the stitching thread falls off the abdominal cavity due to stitching thread degradation in preference to stitching thread degradation.
The disposable puncture closer of the embodiment is characterized in that the staples 6 are assembled with the staple pushing rod 3 before being used, the puncture cone 1 is used for puncturing fascia to a designated position, the staple pushing handle 7 is pushed, the staple pushing rod 3 is opened and pushed forward under the action of the guide block 2, when the staple pushing rod is pushed to the fascia position, the needle point is 7-20mm away from the incision edge, after the staples 6 completely enter the abdominal cavity, the staple pushing rod rebounds under the action of the staple pushing handle 7, the long spring 5 and the central rod 4, the staples 6 slip from the staple pushing rod 3 due to the fact that the tail size is larger than the size of the staple pushing rod 3, and the staples 6 are pulled and attached to the abdominal wall under the action of a suture.
Claims (9)
1. A disposable puncture closer, characterized in that: comprises a puncture cone, a guide block, a nail pushing rod, a central rod, a long spring, a suture nail and a nail pushing handle; the guide block, the center rod and the nail pushing rod are arranged in the puncture tube, the puncture cone is fixed at the front end of the puncture tube, the guide block is arranged at the rear end of the puncture cone, a nail pushing rod inner cavity is arranged in the rear part of the nail pushing rod, two nail pushing rods are arranged at the front part of the nail pushing rod, and a needle point is arranged at the front end of the nail pushing rod; the two nail pushing rods are supported and matched by the guide block, the front ends of the two nail pushing rods extend out of the puncture tube, the front ends of the two nail pushing rods are parallel to the axial direction of the puncture cone, and the suture sleeve is arranged on the needle point; the long spring is arranged in the inner cavity of the nail pushing rod, the side wall of the inner cavity is in clearance fit with the long spring, the rear end of the long spring is in contact with the bottom wall of the inner cavity of the nail pushing rod, the front end of the long spring is in contact with the rear end of the center rod, the front end of the center rod is connected with the rear end of the puncture cone, and the rear end of the center rod is positioned in the inner cavity of the nail pushing rod and can move relative to the inner cavity of the nail pushing rod; the nail pushing handle is connected with the nail pushing rod.
2. The single-use puncture closer as set forth in claim 1, wherein: the distance between the front parts of the two nail pushing rods and the distance between the rear parts of the two nail pushing rods are larger than the minimum distance.
3. The single-use puncture closer as set forth in claim 2, wherein: the minimum distance Lmin is 2-8mm.
4. The single-use puncture closer as set forth in claim 1, wherein: the needle point is a metal needle point.
5. The single-use puncture closer as set forth in claim 4, wherein: the taper of the front end of the suture nail is in transition fit with the taper of the metal needle point.
6. The single-use puncture closer as set forth in claim 4, wherein: the rear end of the guide block is provided with an inclined plane structure, and when the nail pushing rod advances forwards, the two nail pushing rods are propped by the inclined plane structure of the guide block, so that the distance between the metal needle point and the puncture cone is 7-20mm.
7. The single-use puncture closer as set forth in claim 1, wherein: the outer surface of the suture nail is of a smooth arch structure, the inside of the suture nail is provided with a shaft hole matched with the metal needle point, and the suture nail is provided with a round hole for connecting a suture.
8. The single-use puncture closer as set forth in claim 1, wherein: the rear end of the nail pushing rod is provided with a steering sheet, and the nail pushing handle is connected with the steering sheet through a pin.
9. The single-use puncture closer as set forth in claim 1, wherein: the nail pushing rod is of a Y-shaped nail pushing structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311712844.4A CN117679094A (en) | 2023-12-13 | 2023-12-13 | Disposable puncture closer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311712844.4A CN117679094A (en) | 2023-12-13 | 2023-12-13 | Disposable puncture closer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117679094A true CN117679094A (en) | 2024-03-12 |
Family
ID=90129732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311712844.4A Pending CN117679094A (en) | 2023-12-13 | 2023-12-13 | Disposable puncture closer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117679094A (en) |
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2023
- 2023-12-13 CN CN202311712844.4A patent/CN117679094A/en active Pending
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