CN112472952A - Emergency self-expanding peripheral arteriovenous cannula and using method thereof - Google Patents
Emergency self-expanding peripheral arteriovenous cannula and using method thereof Download PDFInfo
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- CN112472952A CN112472952A CN202010368348.1A CN202010368348A CN112472952A CN 112472952 A CN112472952 A CN 112472952A CN 202010368348 A CN202010368348 A CN 202010368348A CN 112472952 A CN112472952 A CN 112472952A
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- Prior art keywords
- blood vessel
- guide sheath
- puncture needle
- covered stent
- intubation
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/0067—Catheters; Hollow probes characterised by the distal end, e.g. tips
- A61M25/0082—Catheter tip comprising a tool
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
- A61F2/90—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
- A61F2002/9505—Instruments specially adapted for placement or removal of stents or stent-grafts having retaining means other than an outer sleeve, e.g. male-female connector between stent and instrument
- A61F2002/9511—Instruments specially adapted for placement or removal of stents or stent-grafts having retaining means other than an outer sleeve, e.g. male-female connector between stent and instrument the retaining means being filaments or wires
Abstract
The invention relates to the technical field of medical instruments, in particular to an emergency self-expanding peripheral arteriovenous cannula and a using method thereof. The problem that in the prior art, when a patient has low blood pressure and low blood volume in an emergency situation, a peripheral blood vessel access cannot be quickly established to carry out extracorporeal circulation life treatment is solved. The technical scheme adopted by the invention comprises a puncture assembly and a cannula assembly; the front end of the intubation tube body is connected with a blood vessel covered stent, the outer wall of the blood vessel covered stent is sleeved with a release sleeve, the release sleeve can slide along the outer wall of the blood vessel covered stent, and the diameter of the release sleeve is larger than that of the intubation tube body; the guide sheath is formed by buckling a first component and a second component which are symmetrical in structure and integrally forming a hollow cylindrical body structure with one conical end; the intubation component is arranged in the guide sheath, the puncture needle is arranged in the blood vessel covered stent and the intubation tube body in a penetrating mode, two ends of the puncture needle extend out of the guide sheath, and the guide wire is arranged in the puncture needle in a penetrating mode.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to an emergency self-expanding peripheral arteriovenous cannula and a using method thereof.
Background
At present, clinically, skin at a peripheral artery and vein blood vessel (mainly a femoral artery and vein, an internal jugular vein or an axillary artery) of a patient is disinfected, a puncture needle is used for puncturing or cutting open the skin to expose the artery and vein of the patient, a guide wire is placed into the artery and vein blood vessel of the patient through the tail part of the puncture needle, the puncture needle is withdrawn, an intubation tube with an inner sheath is used for separating tissues along the guide wire by blunt force, the intubation tube with the inner sheath is inserted into the peripheral artery and vein blood vessel of the patient, the inner sheath is withdrawn, and the operation is completed. The intubation mode can only select an intubation tube with a diameter smaller than that of a peripheral artery and vein vessel, so that the venous drainage quantity and the arterial perfusion quantity required by extracorporeal circulation life support are difficult to meet, and blood leakage of the vessel at the intubation part is easy to occur after the intubation time is too long, thereby causing serious complications. The guide wire of the common peripheral blood vessel intubation has the length of about 2m, and the common peripheral blood vessel intubation is coiled and placed in advance, or is ejected out of a sterile area to cause pollution. The whole operation process is complex, infection is easy to occur, and many complications exist, so that the main factor for restricting the extracorporeal circulation life support of the peripheral arteriovenous cannula is also provided.
Disclosure of Invention
In view of the above, the present invention provides an emergency self-expandable peripheral arteriovenous cannula and a method for using the same, in order to solve the problem that in the prior art, when a patient has hypotension and hypovolemia, a peripheral vascular access cannot be quickly established for extracorporeal circulation life treatment.
In order to solve the problems in the prior art, the technical scheme of the invention is as follows: the utility model provides an emergent formula periphery arteriovenous intubate of expanding which characterized in that: comprises a puncture assembly consisting of a guide sheath, a puncture needle and a guide wire and an intubation assembly consisting of a blood vessel covered stent, a release sleeve and an intubation tube body;
the front end of the intubation tube body is connected with a blood vessel covered stent, the outer wall of the blood vessel covered stent is sleeved with a release sleeve, the release sleeve can slide along the outer wall of the blood vessel covered stent, and the diameter of the release sleeve is larger than that of the intubation tube body;
the guide sheath is formed by buckling a first component and a second component which are symmetrical in structure and integrally forming a hollow cylindrical body structure with one conical end; the cannula component is arranged in the guide sheath,
the puncture needle is arranged in the blood vessel covered stent and the intubation tube body in a penetrating way, two ends of the puncture needle extend out of the guide sheath, and the guide wire is arranged in the puncture needle in a penetrating way.
The front end of the cannula tube body is connected with one end of the blood vessel covered stent by adopting a circular truncated cone.
The intubation tube body is internally provided with a steel wire for reinforcement.
The release sleeve is the same as the vascular covered stent in length.
The length of the guide wire is 40 cm.
The steel wire is in a spring shape.
The use method of the emergency self-expandable peripheral arteriovenous cannula is characterized in that: the method comprises the following steps:
1) the puncture needle which is internally provided with a guide wire and externally sleeved with a tearable guide sheath is punctured to the inner wall of a peripheral arteriovenous blood vessel through the skin of a patient, the guide wire is pushed into the peripheral arteriovenous blood vessel lumen of the patient through the inner cavity of the puncture needle after blood flows out from the tail part of a needle core, the puncture needle is supported and stabilized by hands, the tearable guide sheath is pushed into the peripheral arteriovenous blood vessel lumen of the patient along the puncture needle and the guide wire of the catheter, the puncture needle and the guide wire are withdrawn simultaneously, the guide sheath enters the blood vessel after being guided, and the total length of the guide sheath is 1/3-1/2 on the outer side of the skin;
2) the method comprises the following steps of pushing an intubation component consisting of a vascular graft stent with a release sleeve and a steel wire reinforced intubation tube body into the peripheral arterial and venous blood vessels of a patient along an inner cavity of a tearable guide sheath, tearing the tearable guide sheath with deep grooves on two sides along the carved grooves pre-carved at the symmetrical part of the tube wall of the tearable guide sheath, removing the tearable guide sheath, pulling the release sleeve towards the rear part of the intubation to enable the vascular graft stent arranged in the blood vessel cavity to be dilated to reach a preset caliber, enabling the front end of the dilated vascular graft stent to be in the blood vessel cavity of the patient, enabling the rear end to be exposed out of the skin of the patient through the blood vessel wall, and sealing the blood vessel at the punctured part.
Compared with the prior art, the invention has the following advantages:
1. the cannula with the blood vessel covered stent can be tightly attached to the blood vessel at the puncture part, so that the blood side leakage and the leakage at the puncture blood vessel part generated during the long-time extracorporeal circulation life support can be effectively prevented;
2. after the blood vessel covered stent adopted by the invention is expanded, the caliber of the blood vessel covered stent is larger than that of a common intubation tube, the maximum caliber of the intubation tube is reached, high venous drainage and high arterial perfusion can be provided, higher venous drainage and arterial perfusion can be provided, and the effectiveness of extracorporeal circulation life support is ensured;
3. the guide wire is built in the puncture needle and only needs 40cm, so that the pollution is reduced, and the infection is reduced;
4. the integrated puncture combination can be used for directly puncturing blood vessels, reduces clinical operation, and is suitable for the requirements of hypotension, hypovolemia and on-site treatment.
5. The guide sheath has the function of expanding skin and separating tissues, is convenient for inserting the blood vessel covered stent cannula into a blood vessel, is provided with symmetrically-tearable notches at two sides, is convenient and quick to remove, reduces operation steps, and wins time for first aid.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a cannula assembly;
FIG. 3 is a schematic view of a released structure of a vascular stent graft in a cannula assembly;
FIG. 4 is a schematic diagram of the structure of component one;
FIG. 5 is a schematic view of the structure of the second component;
FIG. 6 is a schematic view of a first assembly and a second assembly to be combined into a whole;
description of the labeling: 1-puncture needle, 2-guide sheath, 3-guide wire, 4-blood vessel covered stent, 5-release sleeve and 6-intubation tube;
2-1-component one and 2-2-component two.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The embodiment provides an emergency self-expandable peripheral arteriovenous cannula, as shown in fig. 1 and 3, comprising a puncture needle 1, a guide sheath 2, a guide wire 3, a blood vessel covered stent 4, a release sleeve 5 and a cannula tube body 6, as shown in fig. 1;
the blood vessel covered stent 4, the release sleeve 5 and the cannula tube body 6 form a cannula assembly, as shown in fig. 2 and 3;
the front end of the cannula tube body 6 is connected with a blood vessel covered stent 4 through a circular truncated cone, a steel wire for reinforcement is arranged in the cannula tube body 6, a release sleeve 5 is sleeved on the outer wall of the blood vessel covered stent 4, the release sleeve 5 can slide along the outer wall of the blood vessel covered stent 4, and the diameter of the release sleeve 5 is larger than that of the cannula tube body 6;
the puncture assembly is composed of the puncture needle 1, the guide sheath 2 and the guide wire 3;
the guide sheath 2 consists of a first component 2-1 and a second component 2-2, the first component 2-1 is structurally integrated by a semicircular arc and a conical arc, and a plurality of inner grooves are formed in the end face of the first component; the structure of the second component 2-2 is formed by a semicircular arc and a conical arc, and the end surface of the second component is provided with an inner groove which is matched with the inner groove of the first component 2-1 in a staggered way; the first component 2-1 and the second component 2-2 are buckled and integrally formed into a hollow cylindrical structure with one conical end through a boss and a groove, as shown in fig. 4-6;
the intubation component is arranged in the guide sheath 2, the puncture needle 1 is arranged in the blood vessel covered stent 4 and the intubation tube body 6 in a penetrating way, two ends of the puncture needle extend out of the guide sheath 2, and the guide wire 3 is arranged in the puncture needle 1 in a penetrating way.
The guide wire 3 has a length of 40 cm.
The shape of above-mentioned steel wire is the spring form, prevents that the intubate body from buckling, influences drainage volume or infusion volume.
An emergency self-expandable peripheral arteriovenous cannula using method comprises the following steps:
1) the puncture needle 1 which is internally provided with a guide wire 3 and externally sleeved with a tearable guide sheath 2 is punctured into the inner wall of a peripheral arteriovenous blood vessel through the skin of a patient, the guide wire 3 is pushed into the lumen of the peripheral arteriovenous blood vessel of the patient through the inner cavity of the puncture needle 1 after blood flows out from the tail part of a needle core, the puncture needle 1 is supported and stabilized by hands, the tearable guide sheath 2 is pushed into the lumen of the peripheral arteriovenous blood vessel of the patient along the puncture needle 1 and a catheter guide wire 3, the puncture needle 1 and the guide wire 3 are withdrawn, the guide sheath 2 enters the blood vessel after the guide sheath 2 enters the blood vessel, and the total length 1/3-1/2 of the guide sheath 2 is left on the outer;
2) the blood vessel covered stent 4 with the release sleeve 5 and the intubation component consisting of the steel wire reinforced intubation tube body 6 are pushed to the peripheral artery and vein of a patient along the inner cavity of the tearable guide sheath 2, the tearable guide sheath 2 with deep grooves on two sides is torn along the carved grooves on the symmetrical part of the tube wall to remove the guide sheath, the release sleeve 5 is pulled towards the rear part of the intubation to ensure that the blood vessel covered stent 4 in the blood vessel cavity is expanded to reach the preset caliber, the front end of the expanded blood vessel covered stent 4 is arranged in the blood vessel cavity of the patient, the rear end is exposed out of the skin of the patient through the blood vessel wall, and the blood vessel at the puncture part is sealed.
Example (b):
in an emergency treatment site with respiratory circulation function failure, most patients can have the conditions of hypotension, hypovolemia and the like, the skin of an intubation part of the patient is disinfected conventionally, a puncture needle 1 which is internally provided with a guide wire 3 and externally sleeved with a tearable guide sheath 2 is punctured through the skin of the patient, a needle head punctures the inner wall of a peripheral arteriovenous blood vessel, after blood flows out from the tail part of the puncture needle, the guide wire 3 is pushed into the peripheral arteriovenous blood vessel lumen of the patient through the inner cavity of the puncture needle 1, the puncture needle 1 is supported and stabilized by hands, the tearable guide sheath 2 is pushed into the peripheral arteriovenous blood vessel lumen of the patient along the puncture needle 1 and the guide wire 3, the puncture needle 1 and the guide wire 3 are withdrawn, the guide sheath 2 enters the blood vessel after being guided, and the total length 1/3-1/2 of the guide sheath 2 is; the intubation component consisting of the blood vessel covered stent 4 with the release sleeve 5 and the intubation tube body 6 reinforced by steel wires is pushed into the peripheral arterial and venous blood vessels of a patient along the inner cavity of the tearable guide sheath 2, the tearable guide sheath 2 with deep grooves on two sides is torn along the carved grooves pre-carved at the symmetrical part of the tube wall to remove the guide sheath, the release sleeve 5 is pulled towards the back of the intubation to ensure that the blood vessel covered stent 4 arranged in the blood vessel cavity is expanded, the caliber of the intubation tube inner cavity of the blood vessel covered stent is increased, higher venous blood drainage quantity and arterial blood perfusion quantity can be provided, the front end of the expanded blood vessel covered stent 4 is arranged in the blood vessel cavity of the patient, the back end is exposed out of the skin of the patient through the blood vessel wall to seal the blood vessel at the puncture part and completely attach to the blood vessel wall, the phenomena of the blood vessel side leakage and the leakage of the blood vessel at the puncture part caused by the pressure generated during the long-, the steel wire reinforcing intubate body 6 that the rear end is connected can prevent that the intubate from folding the distortion in the use, through being connected with extracorporeal circulation life support equipment, establishes the external life support route of long-time use.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (7)
1. The utility model provides an emergent formula periphery arteriovenous intubate of expanding which characterized in that: comprises a puncture assembly consisting of a guide sheath (2), a puncture needle (1) and a guide wire (3) and an intubation assembly consisting of a blood vessel covered stent (4), a release sleeve (5) and an intubation tube body (6);
the front end of the intubation tube body (6) is connected with a blood vessel covered stent (4), the outer wall of the blood vessel covered stent (4) is sleeved with a release sleeve (5), the release sleeve (5) can slide along the outer wall of the blood vessel covered stent (4), and the diameter of the release sleeve (5) is larger than that of the intubation tube body (6);
the guide sheath (2) is formed by buckling a component I (2-1) and a component II (2-2) which are symmetrical in structure and integrally forming a hollow cylindrical structure with one conical end; the intubation component is arranged in the guide sheath (2),
the puncture needle (1) is arranged in the vascular tectorial membrane bracket (4) and the intubation tube body (6) in a penetrating way, two ends of the puncture needle extend out of the guide sheath (2), and the guide wire (3) is arranged in the puncture needle (1) in a penetrating way.
2. The emergency self-expandable peripheral cannulated arteriovenous cannula of claim 1, wherein: the front end of the intubation tube body (6) is connected with one end of the blood vessel covered stent (4) by adopting a circular truncated cone.
3. The emergency self-expandable peripheral cannulated arteriovenous cannula of claim 1 or 2, wherein: the intubation tube body (6) is internally provided with a steel wire for reinforcement.
4. The emergency self-expandable peripheral cannulated arteriovenous cannula of claim 3, wherein: the release sleeve (5) is the same as the vascular graft stent (4) in length.
5. The emergency self-expandable peripheral cannulated arteriovenous cannula of claim 4, wherein: the length of the guide wire (3) is 40 cm.
6. The emergency self-expandable peripheral cannulated arteriovenous cannula of claim 5, wherein: the steel wire is in a spring shape.
7. The method of using an emergency self-expandable peripheral arteriovenous cannula of claim 1 wherein: the method comprises the following steps:
(1) the puncture needle (1) which is internally provided with a guide wire (3) and externally sleeved with a tearable guide sheath (2) is punctured into the inner wall of a peripheral arteriovenous blood vessel through the skin of a patient, the guide wire (3) is pushed into the lumen of the peripheral arteriovenous blood vessel of the patient through the inner cavity of the puncture needle (1) after blood flows out from the tail part of a needle core, the puncture needle (1) is supported and stabilized by hands, the tearable guide sheath (2) is pushed into the lumen of the peripheral arteriovenous blood vessel of the patient along the puncture needle (1) and a catheter guide wire (3), the puncture needle (1) and the guide wire (3) are withdrawn simultaneously, the guide sheath (2) enters the blood vessel after the guide sheath (2) enters the blood vessel, and the total length 1/3-1/2 of the guide sheath (2) is reserved;
2) the method comprises the steps of pushing an intubation component consisting of a vascular covered stent (4) with a release sleeve (5) and a steel wire reinforced intubation tube body (6) into the peripheral arterial and venous blood of a patient along the inner cavity of a tearable guide sheath (2), tearing the tearable guide sheath (2) with deep grooves on two sides along the carved grooves which are symmetrically arranged on the tube wall of the tearable guide sheath, removing the tearable guide sheath, pulling the release sleeve (5) towards the rear part of the intubation to expand the vascular covered stent (4) arranged in the vascular cavity to a preset caliber, arranging the front end of the expanded vascular covered stent (4) in the vascular cavity of the patient, exposing the rear end of the vascular covered stent outside the skin of the patient through the vascular wall, and sealing the blood vessel at the puncture part.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910784927 | 2019-08-23 | ||
| CN2019107849271 | 2019-08-23 |
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| Publication Number | Publication Date |
|---|---|
| CN112472952A true CN112472952A (en) | 2021-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010368348.1A Pending CN112472952A (en) | 2019-08-23 | 2020-05-01 | Emergency self-expanding peripheral arteriovenous cannula and using method thereof |
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| CN (1) | CN112472952A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113143378A (en) * | 2021-04-15 | 2021-07-23 | 湖南维迩医疗科技有限公司 | Sliding vascular sheath capable of plugging artery and vein |
-
2020
- 2020-05-01 CN CN202010368348.1A patent/CN112472952A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113143378A (en) * | 2021-04-15 | 2021-07-23 | 湖南维迩医疗科技有限公司 | Sliding vascular sheath capable of plugging artery and vein |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20210312 |
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| WD01 | Invention patent application deemed withdrawn after publication |