CN110368070B - Blood pressure dynamic guide core puncture trocar - Google Patents
Blood pressure dynamic guide core puncture trocar Download PDFInfo
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- CN110368070B CN110368070B CN201810324419.0A CN201810324419A CN110368070B CN 110368070 B CN110368070 B CN 110368070B CN 201810324419 A CN201810324419 A CN 201810324419A CN 110368070 B CN110368070 B CN 110368070B
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- guide core
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
- A61B17/3421—Cannulas
Abstract
The invention belongs to the field of medical instruments, and relates to a blood pressure dynamic guide core puncture trocar; the trocar consists of a semipermeable membrane stopper, a piston and guide core assembly, a metal puncture needle, an indwelling cannula and an infusion connecting base assembly; the semipermeable membrane stopper, the piston, the core guide assembly, the metal puncture needle, the indwelling cannula and the infusion connection base assembly are fixedly connected in sequence. The use result shows that the trocar takes the blood pressure of the blood return as the power to put into the blood vessel puncture trocar of the guide core; the trocar is provided with a guide core which does not need manual operation, so that the puncture tube placing failure caused by the displacement of a needle tip entering a blood vessel due to interference factors can be avoided; the guide core does not need manual intervention, and accidents such as artery tearing or interlayer and the like caused by external force can be avoided; the trocar can improve the success rate of the clinical vascular puncture catheterization and reduce the clinical puncture complications.
Description
Technical Field
The invention belongs to the field of medical instruments, and relates to a blood pressure dynamic guide core puncture trocar; the trocar can improve the success rate of tube placement in clinical blood vessel puncture and reduce clinical puncture complications.
Background
Modern surgical medicine develops to present, western medicine dominates treatment in clinic, and technologies such as venous transfusion and arterial puncture are generally used in the western medicine clinic; the venous puncture technology is not difficult due to superficial nature of vein anatomy of a human body, but the arterial puncture technology is gradually used for clinical intervention such as invasive arterial manometry, DSA catheter operation and the like along with development of medical technology, the intervention measures all need clinicians to carry out arterial puncture, the human artery is not superficial due to particularity of anatomy, an operator needs to have certain clinical experience to carry out blind puncture by touch positioning, practice shows that the blind puncture positioning is simpler to the artery, but the process of placing the existing arterial puncture needle sleeve into a blood vessel after blood is seen often has problems, and most of the procedures are blood-seen but tube placement is unsuccessful. The reason for the unsuccessful placement is many, most of which is that the plastic cannula, which is thicker than the core, pushes the blood vessel away during the placement of the plastic cannula, since the plastic cannula does not have the ability to be punctured and the metal core with the puncturing function is not in the target blood vessel of the patient, thus rendering the placement unsuccessful.
In recent years, puncture needles with guide cores are developed along with continuous improvement of the technology, the guide cores of the puncture needles are manually placed into blood vessels after blood appears at the tail section of the puncture needle, and then plastic sleeves are placed into the blood vessels along the puncture needle cores and the guide cores; the technology improves the puncture success rate, but has the defects that the guide core needs to be manually placed into the blood vessel after blood is seen, and the manual operation in the process can cause the displacement of the needle point so as to cause unsmooth guide core placement; in clinical practice, when blood returns from the tail end of the puncture needle, the tip needle holes of the blood return needle core of the whole puncture needle are not always in the blood vessel, and the needle tip may be positioned on the side wall of the blood vessel to cut the blood vessel to cause blood return, and at the moment, the manual placement of the guide core often causes accidents such as artery tearing or dissection due to strength problems.
Based on the current situation of the prior art, the inventor of the application intends to provide a blood pressure dynamic guide core puncture trocar; the trocar takes the blood pressure of the returned blood as the power to put into the blood vessel puncture trocar of the guide core; the trocar is provided with the guide core, and the guide core does not need manual operation, so that the puncture tube placing failure caused by the displacement of the needle tip which enters the blood vessel due to the interference of human factors can be avoided; in addition, because the guide core does not depend on manual intervention, accidents such as artery tearing or interlayer caused by external force can be avoided, the success rate of tube placement for clinical vascular puncture can be improved, and clinical puncture complications can be reduced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a blood pressure dynamic guide core puncture trocar; the trocar can improve the success rate of tube placement in clinical blood vessel puncture and reduce clinical puncture complications.
The trocar of the invention takes the blood pressure of the returned blood as the power to put the blood vessel puncture trocar of the guide core; the trocar is provided with the guide core, and the guide core does not need manual operation, so that the puncture tube placing failure caused by the displacement of the needle tip which enters the blood vessel due to the interference of human factors can be avoided; the guide core does not need manual intervention, and accidents such as artery tearing or interlayer caused by external force can be avoided.
The blood pressure dynamic guide core puncture trocar is characterized by mainly comprising a semipermeable membrane stopper 1, a piston and guide core assembly 2, a metal puncture needle 3, an indwelling cannula and an infusion connection base assembly 4; the semipermeable membrane stopper 1, the piston and guide core assembly 2, the metal puncture needle 3, the indwelling cannula and the infusion connection base assembly 4 are fixedly connected in sequence;
in the invention, the piston and guide core assembly 2 consists of a super-smooth piston 9 and a guide core connected with the piston; the center of the ultra-smooth piston 9 is provided with a hole;
in the invention, the guide core is divided into a hollow cylindrical part 10 of the guide core and a star-shaped part 11 of the guide core; in the star-shaped part 11 of the guide core, gaps formed by adjacent angles are converged into the cylinder of the hollow cylindrical part 10 of the guide core at the rear section, and the whole guide core is positioned in the hollow metal puncture needle core 8; the guide core can be made of plastic or metal materials;
in the invention, the head end of the star-shaped part 11 of the guide core is a blunt round head and is smooth, and the front end of the star-shaped part is an inclined plane and is in the same plane with the inclined plane of the metal needle core; the star-shaped space in the star-shaped part 11 of the guide core can facilitate the blood flow to pass through; the diameter of the cross section of the guide core is smaller than the hollow diameter of the hollow metal puncture needle core 8, and the guide core can penetrate through the hollow metal puncture needle core 8;
in the invention, the cylindrical part of the hollow cylindrical part 10 of the guide core goes out from the joint of the hollow metal puncture needle core 8 and the blood storage tube 5, and blood between the rear section of the guide core and the hollow metal puncture needle core 8 can not pass through;
in the invention, the ultra-smooth piston 9 is round and has a diameter of 5-15mm, and a round point of the ultra-smooth piston is connected with the tail end 12 of the hollow metal guide core; the ultra-smooth piston 9 is positioned in the blood storage tube 5, is matched with the blood storage tube 5, and can drive the metal guide core to move up and down in the blood storage tube, and the motion of the ultra-smooth piston cannot cross the opening of the blood storage tube close to the end of the needle core.
In the invention, the metal puncture needle 3 comprises a blood storage vessel main body 5, a metal puncture needle core fixing base 7 and a hollow metal puncture needle core 8; the blood storage tube main body 5 is provided with an opening 6 close to the end of the metal needle core;
in the invention, the hollow metal puncture needle core 8 can be made into various models according to actual requirements, and the head end of the hollow metal puncture needle core is sharp and inclined, thus being beneficial to puncturing the skin and puncturing blood vessels;
the blood storage tube 5 is positioned at the rear end of the hollow metal puncture needle core 8, the inner wall of the blood storage tube 5 is a hollow cylinder, the diameter is 5-15mm, the inner diameter is consistent from front to back, the inner surface is smooth, the material is transparent, and the length is 10-30mm; one end of the blood storage tube 5 close to the hollow metal puncture needle core 8 is provided with an opening 6 which can be communicated with the outside air.
In the invention, the semipermeable membrane occluder 1 is positioned at the rear end of the blood storage vessel 5, and the occluder main body 13 is provided with a semipermeable membrane 14 which can allow air to pass through and can not allow blood to pass through.
In the indwelling cannula and the infusion connecting base 4, the metal needle core 8 is externally provided with a plastic cannula which can be indwelling in the body of a patient, the plastic cannula and the metal needle core are tightly sleeved together, blood can not pass through, and the tail end of the cannula is a standard infusion connector with a spiral connector.
The use result shows that the trocar provided by the invention takes the blood pressure of the returned blood as the power to put the blood vessel puncture trocar with the guide core; the trocar is provided with the guide core, and the guide core does not need manual operation, thereby avoiding the puncture and tube placement failure caused by the displacement of the needle tip which enters the blood vessel due to the interference of human factors; in addition, because the guide core does not depend on manual intervention, accidents such as artery tearing or interlayer and the like caused by the problem of manual violence are avoided; the trocar can improve the success rate of tube placement for clinical blood vessel puncture and reduce the complications of clinical puncture.
To facilitate understanding, the blood pressure powered introducer needle cannula trocar of the present invention will now be described in detail with reference to the specific drawings and examples. It is specifically noted that the specific examples and figures are for illustrative purposes only and it will be apparent to those skilled in the art that, in light of the description herein, various modifications and changes can be made in the invention which are within the scope of the invention.
Drawings
Fig. 1 is an appearance schematic view of a blood pressure dynamic guide core puncture trocar.
FIG. 2 is a schematic structural view of the blood pressure dynamic guide core puncture trocar of the invention,
wherein, 1 is a semipermeable membrane stopper, 2 is a piston and guide core component, 3 is a metal puncture needle, and 4 is an indwelling cannula and an infusion connection base component.
FIG. 3 is a schematic structural view of the metal puncture needle in the blood pressure dynamic guide core puncture trocar,
wherein 5 is a blood storage tube, 6 is an opening, 7 is a metal puncture needle core fixing base, and 8 is a hollow metal puncture needle core.
FIG. 4 is a schematic view showing the structure of the piston and the guide core assembly in the blood pressure dynamic guide core puncture trocar,
wherein A is the appearance structure schematic diagram of the guide core and the ultra-smooth piston part, B is the section diagram of the guide core,
9 is a super-smooth piston with a hole at the center, 10 is a hollow cylindrical part of the guide core, 11 is a star-shaped part of the guide core, and 12 is an opening at the joint of the hollow cylinder of the guide core and the piston.
Figure 5 is a structural schematic view of the semipermeable membrane stopper of the blood pressure dynamic guide core puncture trocar,
wherein 13 is the stopper main body, 14 is the semipermeable membrane.
Detailed Description
Example 1
As shown in figures 1 to 5, the blood pressure dynamic guide core puncture trocar mainly comprises a semipermeable membrane stopper 1, a piston and guide core component 2, a metal puncture needle 3, an indwelling cannula and an infusion connection base component 4; the semipermeable membrane stopper 1, the piston and guide core assembly 2, the metal puncture needle 3, the indwelling cannula and the infusion connection base assembly 4 are fixedly connected in sequence;
the piston and guide core assembly 2 consists of a super-sliding piston 9 and a guide core connected with the piston; the center of the ultra-smooth piston 9 is provided with a hole;
the guide core is divided into a hollow cylindrical part 10 of the guide core and a star-shaped part 11 of the guide core; in the star-shaped part 11 of the guide core, gaps formed by adjacent angles are converged into the cylinder of the hollow cylindrical part 10 of the guide core at the rear section, and the whole guide core is positioned in the hollow metal puncture needle core 8; the guide core can be made of plastic or metal materials;
the head end of the star-shaped part 11 of the guide core is a blunt round head and is smooth, and the front end of the star-shaped part is an inclined plane and is in the same plane with the inclined plane of the metal needle core; the star-shaped space in the star-shaped part 11 of the guide core can facilitate the blood flow to pass through; the diameter of the cross section of the guide core is smaller than the hollow diameter of the hollow metal puncture needle core 8, and the guide core can penetrate through the hollow metal puncture needle core 8;
the cylindrical part of the hollow cylindrical part 10 of the guide core goes out from the joint of the hollow metal puncture needle core 8 and the blood storage tube 5, and blood between the rear section of the guide core and the hollow metal puncture needle core 8 can not pass through;
the ultra-smooth piston 9 is round and has the diameter of 5-15mm, and a round point of the ultra-smooth piston is connected with the tail end 12 of the hollow metal guide core; the ultra-smooth piston 9 is positioned in the blood storage tube 5, is matched with the blood storage tube 5, and can drive the metal guide core to move up and down in the blood storage tube, and the movement of the ultra-smooth piston cannot cross the open hole of the blood storage tube close to the end of the needle core.
The metal puncture needle 3 comprises a blood storage vessel main body 5, a metal puncture needle core fixing base 7 and a hollow metal puncture needle core 8; the blood storage tube main body 5 is provided with an opening 6 close to the end of the metal needle core;
the hollow metal puncture needle core 8 can be made into various models according to actual requirements, and the head end of the hollow metal puncture needle core is sharp and inclined, so that the puncture needle core is beneficial to puncturing the skin and puncturing blood vessels;
the blood storage tube 5 is positioned at the rear end of the hollow metal puncture needle core 8, the inner wall of the blood storage tube 5 is a hollow cylinder, the diameter is 5-15mm, the inner diameter is consistent from front to back, the inner surface is smooth, the material is transparent, and the length is 10-30mm; one end of the blood storage tube 5 close to the hollow metal puncture needle core 8 is provided with an opening 6 which can be communicated with the outside air.
A super-smooth piston 9 can be placed in the blood storage tube 5 and matched with the super-smooth piston 9; the head end inclined plane of the hollow metal puncture needle core 8 and the head end inclined plane of the star-shaped part 11 of the guide core are in the same plane.
The semipermeable membrane occluder 1 is arranged at the rear end of the blood storage vessel 5, and the occluder main body 13 is provided with a semipermeable membrane 14 which can allow air to pass through and can not allow blood to pass through.
In the indwelling cannula and the infusion connecting base 4, the metal needle core 8 is externally provided with a plastic cannula which can be indwelling in the body of a patient, the plastic cannula and the metal needle core are tightly sleeved together, blood can not pass through, and the tail end of the cannula is a standard infusion connector with a spiral connector.
Example 2
When a puncture catheterization operation needs to be performed on a patient clinically, the patient is ordered to put the puncture body position or put the body position according to a puncture requirement, after local disinfection, the needle is inserted above a puncture target point, the metal needle core carries the guide core and the sleeve to sequentially puncture the skin and penetrate subcutaneous tissues to enter a blood vessel, when the metal needle core enters the blood vessel, blood flows to the ultra-smooth piston through a gap between a star-shaped groove of the guide core and the inner wall of the metal needle core due to self pressure, the blood flows into a cavity gap between the tail end of the blood storage vessel and the ultra-smooth piston through a guide core opening on the ultra-smooth piston, the needle insertion is stopped at the moment, the blood continuously flows out to fill the rear section of the blood storage vessel, the filled blood generates the same pressure as that in the punctured blood vessel, the pressure is applied to the piston, the side wall of the blood storage vessel and a semipermeable membrane occluder at the rear end, the applied pressure can offset the large air pressure on the other side of the piston and the friction force between the ultra-smooth piston and the inner wall of the blood storage vessel to generate a thrust to push the ultra-smooth piston to push the metal needle core to push the blood storage vessel to move towards the patient end, and the metal needle core is positioned in the other side of the blood storage vessel, and the metal needle core, and the metal needle can be inserted into the blood vessel, and the metal needle is inserted into the metal needle core, and the metal needle cannula, and the metal needle can be fixed in the blood vessel. After the sleeve completely enters the body of a patient, the tail end of the plastic sleeve is fixed by one hand, the blood storage vessel is pulled by the other hand, the metal needle core is connected with the piston guide wire, and the piston guide wire is pulled out of the sleeve; then the infusion tube or the piezometric tube is connected to the tail end of the plastic sleeve, and the operation is finished.
The results of the above embodiments show that the trocar of the present invention relies on the blood pressure of the blood return as the power to insert the blood vessel puncture trocar of the guide core; the trocar is provided with the guide core, and the guide core does not need manual operation, thereby avoiding the puncture tube placement failure caused by the displacement of the needle tip which enters the blood vessel due to the interference of human factors; in addition, because the guide core does not depend on manual intervention, accidents such as artery tearing or interlayer and the like caused by the problem of manual violence are avoided; the trocar can improve the success rate of the clinical vascular puncture catheterization and reduce the clinical puncture complications.
Claims (5)
1. A blood pressure dynamic guide core puncture trocar is characterized by mainly comprising a semipermeable membrane stopper (1), a piston and guide core assembly (2), a metal puncture needle (3), an indwelling cannula and an infusion connection base assembly (4); the semipermeable membrane stopper (1), the piston and the guide core assembly (2), the metal puncture needle (3), the indwelling cannula and the infusion connection base assembly (4) are fixedly connected in sequence;
the piston and guide core assembly (2) consists of a super-sliding piston (9) and a guide core connected with the piston; a hole is formed in the center of the ultra-smooth piston (9); the guide core is divided into a hollow cylindrical part (10) of the guide core and a star-shaped part (11) of the guide core; in the star-shaped part (11) of the guide core, gaps formed by adjacent angles are converged into the cylinder of the hollow cylindrical part (10) of the guide core at the rear section;
the metal puncture needle (3) comprises a blood storage tube main body (5), a metal puncture needle core fixing base (7) and a hollow metal puncture needle core (8) with a sharp and inclined head end; the end of the blood storage tube main body (5) close to the metal needle core is provided with an opening (6);
the blood storage tube main body (5) is positioned at the rear end of the hollow metal puncture needle core (8), the inner wall of the blood storage tube main body (5) is a hollow cylinder, the diameter is 5-15mm, the inner diameter is consistent from front to back, the inner surface is smooth, the material is transparent, and the length is 10-30mm;
the head end inclined plane of the hollow metal puncture needle core (8) and the head end inclined plane of the star-shaped part (11) of the guide core are in the same plane; the diameter of the cross section of the star-shaped part (11) of the guide core is smaller than the hollow diameter of the hollow metal puncture needle core (8) and penetrates through the hollow metal puncture needle core (8).
2. The blood pressure dynamic guide core puncture trocar according to claim 1, characterized in that the head end of the star-shaped part (11) of the guide core is blunt round head, the head end is smooth, and the front end is a bevel.
3. The blood pressure power guide core puncture trocar according to claim 1, wherein the ultra-smooth piston (9) is circular and has a diameter of 5-15mm.
4. The blood pressure dynamic core puncture trocar according to claim 1, characterized in that the hollow metal puncture trocar core (8) can be made into various types according to actual needs.
5. The blood pressure power guide core puncture trocar according to claim 1, characterized in that a super-smooth piston (9) can be placed inside the blood storage vessel main body (5) and matched with the super-smooth piston (9).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810324419.0A CN110368070B (en) | 2018-04-12 | 2018-04-12 | Blood pressure dynamic guide core puncture trocar |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810324419.0A CN110368070B (en) | 2018-04-12 | 2018-04-12 | Blood pressure dynamic guide core puncture trocar |
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| CN110368070A CN110368070A (en) | 2019-10-25 |
| CN110368070B true CN110368070B (en) | 2023-04-07 |
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| CN112168296A (en) * | 2020-09-29 | 2021-01-05 | 杭州市老年病医院 | Anti-overflow blood totally enclosed's arteriopuncture external member |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3912460B2 (en) * | 1998-07-01 | 2007-05-09 | 日本シャーウッド株式会社 | Cannula introduction tool |
| CN2572989Y (en) * | 2002-08-16 | 2003-09-17 | 孙海鹰 | Large blood vessel puncture needle |
| US8202253B1 (en) * | 2008-10-17 | 2012-06-19 | Wexler Toby J | Method and apparatus for introducing an intravenous catheter |
| CN203169162U (en) * | 2013-02-16 | 2013-09-04 | 高特生 | One-time artery difficult puncture needle |
| CN203634260U (en) * | 2013-12-27 | 2014-06-11 | 翟大明 | Cerebrospinal fluid puncture needle |
| CN104958098B (en) * | 2015-06-25 | 2017-11-17 | 成禹 | Backpulsing arterial puncture needle |
| CN106924839A (en) * | 2015-12-30 | 2017-07-07 | 江苏阳普医疗科技有限公司 | A kind of safe intravenous infusion needle and its implementation |
| CN208319283U (en) * | 2017-08-07 | 2019-01-04 | 徐兵 | A kind of vascular puncture device of intravascular insertion seal wire |
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