CN116831706A - Indwelling device for femoral artery puncture and dilator thereof - Google Patents
Indwelling device for femoral artery puncture and dilator thereof Download PDFInfo
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- CN116831706A CN116831706A CN202310861106.XA CN202310861106A CN116831706A CN 116831706 A CN116831706 A CN 116831706A CN 202310861106 A CN202310861106 A CN 202310861106A CN 116831706 A CN116831706 A CN 116831706A
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- 238000005452 bending Methods 0.000 claims description 15
- 230000000903 blocking effect Effects 0.000 claims description 13
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- 238000007789 sealing Methods 0.000 claims description 10
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- 238000002560 therapeutic procedure Methods 0.000 claims description 2
- 238000006424 Flood reaction Methods 0.000 abstract 1
- 238000003780 insertion Methods 0.000 description 24
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Classifications
-
- 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
-
- 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
- A61B17/3403—Needle locating or guiding means
-
- 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
- A61B17/3439—Cannulas with means for changing the inner diameter of the cannula, e.g. expandable
Abstract
The invention relates to the technical field of medical equipment, and provides an indwelling device for femoral artery puncture and an expander thereof, wherein the expander comprises a main body, a channel is formed in the main body, and a first through hole for communicating the channel is formed in the outer side surface of the main body; the handle is connected to one end of the main body, which faces the outside, the channel extends from the main body to the handle, and a second through hole for communicating the channel is formed in the handle; and a first connection part for connecting with the sheath when the main body is inserted into the sheath. The operator can judge whether the dilator sleeved with the sheath reaches a proper position through the condition that blood floods out of the second through hole, and the judgment mode can obtain a more accurate result without the professional experience judgment of medical staff and the auxiliary judgment of perspective on X rays, so that the indwelling position of the sheath after puncture is ensured to be correct.
Description
Technical Field
The invention relates to the technical field of medical appliances, in particular to an indwelling device for femoral artery puncture and an expander thereof.
Background
The femoral artery belongs to the trunk of the lower extremity artery and continues from the external iliac artery. Deep-faced stranding triangle at the mid-inguinal ligament. In the femoral triangle, the femoral artery is located on the outside of the femoral vein, gradually spans from the outside to the front of the femoral vein, descends into the adductor muscle, and then passes through the adductor tendon lacerated hole to the popliteal fossa, which is the easy name. The femoral artery is superficial at the midpoint of the groin, can reach the pulsation, and is a puncture part commonly used for clinical intravascular interventional treatment. In recent years, endovascular interventions have evolved rapidly, which generally employ endovascular treatment channels formed by femoral artery puncture for diagnosis and treatment of diseases; at present, the operation classification of the transfemoral artery puncture and catheterization sheath intervention is very wide, and the operation is divided into the following big blocks from the aspect of the large interventional treatment field: 1. interventional treatment of peripheral blood vessels: applying the device or drug to a local area, known as an interventional procedure of the peripheral vessel, through the femoral vessel; 2. neural intervention treatment: mainly cerebrovascular diseases, such as: the device can be placed to a local part for treatment by an interventional method, such as cerebral aneurysms, cerebral arteriovenous malformations, cerebral vascular dissection, intracranial and extracranial vascular stenosis, cerebral acute intravascular thrombosis and the like; 3. tumor intervention: (1) selective tumor blood supply embolism treatment + arterial infusion chemotherapy malignant tumor. Such as liver cancer, lung cancer, etc. (2) The embolization is used for treating spongiform hemangioma, hysteromyoma, nasopharyngeal fibroangioma and the like. 4. Cardiovascular intervention: more in contact is now the implantation of a coronary stent. Besides the implantation of coronary artery stents, the heart occluder, namely a congenital heart disease placement occluder, has aortic dissection, aortic aneurysm and the like on large blood vessels, can enlarge the stent of the artery, even has heart valve diseases, such as stenosis of the aortic valve and insufficiency of the aortic valve, and can replace the aortic valve by an interventional method. However, at present, after the dilator sleeved with the catheter sheath outside the femoral artery puncture sheath is taken into a patient, whether the dilator and the sheath reach the femoral artery trunk or not cannot be known, and accurate results are difficult to obtain in time only through professional experience judgment of medical staff or auxiliary judgment of X-ray perspective, so that inaccurate positioning of the sheath or the dilator after puncture is easily caused by the mode, and operation and retention effects after puncture are affected.
Disclosure of Invention
The purpose of the invention is that: the utility model provides a femoral artery puncture's indwelling device and expander thereof, whether the operator can judge through the condition of blood gushing that the expander has reached suitable position, this judgement mode need not to judge through medical personnel's professional experience and the supplementary judgement of perspective on the X ray, just can obtain comparatively accurate result, guarantees that the sheath is kept somewhere after the puncture is accurate.
In order to achieve the above object, the present invention provides a dilator comprising:
the body stretches into the body of a patient, a channel is formed in the body, and a first through hole communicated with the channel is formed in the outer side face of the body;
a handle connected to one end of the main body facing the outside, wherein the channel extends from the main body to the handle, and a second through hole communicated with the channel is formed in the handle; and
and a first connection part for connecting with the sheath tube when the main body is inserted into the sheath tube.
Compared with the prior art, the expander has the beneficial effects that: the inside of main part is formed with the passageway that is used for blood to flow, and the both ends of main part are provided with the first through-hole and the second through-hole of intercommunication passageway, and the outside cover is equipped with the expander of sheath pipe and gets into the patient internal back, if reach the suitable position of femoral artery, blood can get into the passageway from first through-hole to gush out by the second through-hole, and the operator can learn the expander that the outside cover is equipped with the sheath pipe has reached the suitable position of arterial trunk this moment, and this judgement mode need not to judge through medical personnel's professional experience and the supplementary judgement of perspective on the X ray, just can obtain comparatively accurate result, guarantees that the sheath pipe is kept somewhere after the puncture is right.
According to the expander disclosed by the embodiment of the invention, the diameters of the first through hole and the second through hole are 0.5-1mm.
According to the expander disclosed by the embodiment of the invention, the distance between the first through hole and the second through hole in the length direction of the main body is 100-150mm.
In the expander of the embodiment of the invention, the diameters of the openings of the first through hole and the second through hole positioned on the inner side wall of the channel are a, the diameters of the openings of the first through hole and the second through hole positioned on the outer side surface of the main body are b,
wherein a < b.
The dilator of the embodiment of the invention, the first through hole and the second through hole Kong Manzu
a/b<1/2。
According to the expander disclosed by the embodiment of the invention, the second through hole is connected with the blood collecting device, the blood collecting device comprises the inserting part and the blood storage part, the inserting part is provided with the blood inlet channel penetrating through two ends of the inserting part, the blood storage part is provided with the blood storage cavity, the blood storage part is connected to one end of the inserting part, the blood inlet channel is communicated with the blood storage cavity, the inserting part stretches into the second through hole, and the blood inlet channel is communicated with the channel.
According to the expander disclosed by the embodiment of the invention, the blood storage part is made of transparent materials, and the scale marks are arranged on the blood storage part and correspond to the blood storage cavity so as to mark the blood volume.
According to the expander disclosed by the embodiment of the invention, the outer peripheral surface of the inserting part is provided with the annular clamping block, the second through hole is provided with the annular clamping groove, and the annular clamping block is matched with the annular clamping groove in size.
In the expander of the embodiment of the invention, a sealing ring is arranged between the outer peripheral surface of the insertion part and the inner side wall of the second through hole.
The invention also provides an indwelling device for femoral artery puncture, which comprises
The dilator of any one of the above embodiments;
the sheath tube is sleeved on the outer side of the expander, and a third through hole which is correspondingly communicated with the first through hole is formed in the sheath tube;
the second connecting part is detachably connected with the first connecting part.
Compared with the prior art, the indwelling device for femoral artery puncture has the beneficial effects that: after the femoral artery is successfully punctured, the guide wire is inserted into a blood vessel through the puncture needle, then the puncture needle is withdrawn, the dilator with the sheath tube sleeved outside is placed along the guide wire, when the dilator with the sheath tube sleeved outside reaches the arterial trunk, blood enters a channel inside the dilator through the third through hole and the first through hole, reaches the second through hole through the channel and reaches the second through hole Kong Chongchu, an operator can know that the dilator reaches the arterial trunk at the moment, and at the moment, the dilator with the sheath tube sleeved outside can be completely placed, and then the guide wire and the dilator are pulled out, so that the sheath tube is reserved in a patient. The judgment mode can obtain a more accurate result without professional experience judgment of medical staff and auxiliary judgment of perspective on X rays, and ensures that the indwelling position of the sheath tube after puncture is correct.
According to the femoral artery puncture indwelling device provided by the embodiment of the invention, the first connecting part comprises the inserting block, the second connecting part is provided with the inserting groove, and the inserting groove is matched with the inserting block in size to connect the first connecting part with the second connecting part; or (b)
The first connecting portion is provided with a plug-in groove, the second connecting portion comprises a plug-in block, and the plug-in groove is matched with the plug-in block in size so as to connect the first connecting portion with the second connecting portion.
According to the femoral artery puncture indwelling device provided by the embodiment of the invention, the buckling part is outwards protruded from one side end surface of the inserting block, and the buckling groove matched with the buckling part in size is formed in the inner wall of the inserting groove.
According to the femoral artery puncture indwelling device, a plurality of inserting blocks are arranged, a plurality of inserting grooves are also arranged, and the inserting grooves correspond to the inserting blocks in position.
The femoral artery puncture indwelling device provided by the embodiment of the invention further comprises a guide wire, wherein the guide wire penetrates through the sheath, the guide wire comprises a body and a bending part, and one end of the guide wire entering a patient is bent to form the bending part.
According to the femoral artery puncture indwelling device provided by the embodiment of the invention, the minimum included angle between the extending direction of the bending part and the extending direction of one end of the body, which faces the bending part, is larger than 45 degrees.
The indwelling device for femoral artery puncture in the embodiment of the invention further comprises a blocking tube, wherein the blocking tube is inserted into the sheath tube after the intravascular interventional therapy is finished, and the size of the outer peripheral surface of the blocking tube is matched with the size of the inner wall surface of the sheath tube.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic view of the structure of an indwelling device for femoral artery puncture according to an embodiment of the present invention;
FIG. 2 is a schematic view of the configuration of a dilator of an indwelling device for femoral artery puncture according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of a dilator of an indwelling device for femoral artery puncture according to an embodiment of the present invention;
FIG. 4 is a schematic illustration of the configuration of the second hole site of the dilator of the femoral artery puncture indwelling device according to an embodiment of the present invention;
FIG. 5 is a schematic view of a configuration of a second hole site of a dilator of an indwelling device for femoral artery puncture according to another embodiment of the present invention;
FIG. 6 is a schematic view of the structure of the sheath of the indwelling device for femoral artery puncture according to an embodiment of the present invention;
FIG. 7 is a schematic view of the structure of a guidewire of an indwelling device for femoral artery puncture according to an embodiment of the present invention;
FIG. 8 is a schematic view of the occlusion tube of an indwelling device for femoral artery puncture according to an embodiment of the present invention;
in the figure, 1, a dilator; 11. a main body; 111. a first opening; 12. a handle; 121. a second opening; 13. a channel; 14. a first through hole; 15. a second through hole; 151. an annular clamping groove; 16. a first connection portion; 161. a plug-in block; 162. a plug-in groove; 17. an insertion part; 171. an annular clamping block; 172. a seal ring; 173. a blood inlet channel; 18. a blood storage unit; 181. a blood storage chamber; 2. a sheath; 21. a second connecting portion; 22. a third through hole; 3. a guide wire; 31. a body; 32. a bending part; 4. plugging the pipe; 41. a blocking part; 42. a third connecting portion; 43. spherical protrusions.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present invention and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present invention can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
As shown in fig. 1, 2 and 3, the dilator 1 according to the preferred embodiment of the present invention includes a main body 11 extending into a patient and a handle 12 for holding, wherein the main body 11 and the handle 12 can be integrally formed or assembled, and both the main body 11 and the handle 12 are made of plastic materials, and it is understood that one end of the main body 11, which is advanced into the body, is a starting end, and one end, which is then advanced into the body, is a terminal end; the main body 11 stretches into the patient, and specifically stretches into the femoral artery to dilate the artery; the inside of the main body 11 is provided with a channel 13, the channel 13 extends along the length direction of the main body 11, the initial end face of the main body 11 is provided with a first opening 111, when the initial end of the main body 11 enters an artery, a small amount of blood enters the channel 13 through the first opening 111 entering the artery, and the cross section of the channel 13 in the width direction of the main body 11 can be circular or rectangular, so that the cross section is not particularly limited; the outer side surface of the main body 11 is provided with a first through hole 14 for communicating with the channel 13, the first through hole 14 can be round or rectangular, the first through hole 14 is arranged at the position of the outer side surface of the main body 11 and overlapped with the sheath, and when the main body 11 reaches a proper position, blood flows into the channel 13 from the first through hole 14.
The handle 12 is connected to one end of the main body 11, which is positioned outside the patient, and a medical staff holds the handle 12 to operate the dilator 1 in the puncturing process; the handle 12 is provided in a cylindrical shape, the channel 13 extends from the main body 11 to the handle 12 and extends in the length direction of the handle 12 in the interior of the handle 12, a second through hole 15 for communicating the channel 13 is formed on the outer peripheral surface of the handle 12, and a second opening 121 for communicating the channel 13 is formed on the end surface of the handle 12 facing away from the main body 11; the second through hole 15 is formed in the outer peripheral surface of the middle end of the shank 12. After the dilator 1 sleeved with the sheath tube enters a patient, when the main body reaches an artery, a small amount of blood enters the channel 13 through the first opening 111 at the beginning end of the main body 11, a small amount of blood flows out of the second through hole 15, and if the main body 11 reaches a proper position of the femoral artery, the blood also enters the channel 13 through the first through hole 14 of the main body 11 and flows out of the second through hole 15 of the handle 12, at the moment, an operator observes that the blood splashes at the second through hole 15, and can know that the dilator 1 sleeved with the sheath tube reaches a proper position, the judgment mode can obtain a relatively accurate result without the judgment of professional experience of medical staff and the auxiliary judgment of perspective on X rays, and ensures that the position of the reserved sheath tube after puncture is correct.
As shown in fig. 1, a dilator 1 according to a preferred embodiment of the present invention further includes a first connection portion 16, where the first connection portion 16 is disposed between the handle 12 and the main body 11, and the first connection portion 16 is used to connect with the sheath 2 when the main body 11 is inserted into the sheath 2, and the sheath is provided with a structure matching with the first connection portion 16 to secure the connection between the dilator 1 and the sheath.
In some embodiments of the present invention, when the first through hole 14 and the second through hole 15 are vertical holes, the diameters of the first through hole 14 and the second through hole 15 near the outer circumference and the inner side wall of the main body 11 are equal, and at this time, the diameters of the first through hole 14 and the second through hole 15 are 0.5-1mm, and the size can enable blood in femoral artery to smoothly enter the first through hole 14 and flow out from the second through hole 15, if the size is too small to cause blockage, the excessive size can easily cause excessive bleeding of a patient, and cause safety hazards. Preferably, the diameters of the first through hole 14 and the second through hole 15 are 0.5mm.
In some embodiments of the present invention, the distance between the centers of the first through hole 14 and the second through hole 15 in the length direction of the main body 11 is set to d, where d ranges from 100 mm to 150mm, that is, the length of the channel 13 ranges from 100 mm to 150mm, which ensures that the channel 13 extends from the patient to the handle 12, and the blood flows through a proper length, which does not cause the blood to flow too long due to the too long channel 13, so that the blood cannot overflow from the second through hole 15 for the first time, and it is difficult for a medical staff to observe the blood overflow from the second channel 13 after the main body 11 reaches the arterial trunk, which further causes the dilator 1 to be inserted too deeply, resulting in the adverse effects of vascular rupture, etc.
In some embodiments of the present invention, the center of the first through hole 14 is located at a distance of 4-6cm from the beginning end surface of the end of the body 11 entering the patient in the length direction of the body 11, and if the distance between the first through hole 14 and the beginning end of the body 11 is too close, soft tissue and blood vessel tearing are easily caused during the process of placing the dilator, and further vascular injury is caused.
As shown in fig. 4, in some embodiments of the present invention, the cross sections of the first through holes 14 and the second through holes 15 are arranged in an inverted trapezoid, the side walls of the first through holes 14 are also arranged obliquely, wherein the diameters of the first through holes 14 and the second through holes 15 at the openings of the inner side walls of the channels 13 are set to a, the diameters of the openings of the first through holes 14 and the second through holes 15 at the outer side walls of the main body 11 are set to b, and the relationship between a and b is a < b; this arrangement makes the outside diameter of first through-hole 14 be greater than the inside diameter, and first through-hole 14 department sets up so that first through-hole 14 can collect blood soon, and this setting of second through-hole 15 department then makes the outside atmospheric pressure of second through-hole 15 be greater than inside atmospheric pressure, prevents that blood from causing the splash because of pressure differential, causes medical environment's pollution.
In some embodiments of the present invention, the first via 14 and the second via 15 satisfy a/b <1/2. The preferred embodiment of the sizes of the first through hole 14 and the second through hole 15 makes the blood collection of the first through hole 14 smoother, and the splash at the second through hole 15 has a smaller blood flow rate, so that the collection and the cleaning are convenient.
As shown in fig. 5, in some embodiments of the present invention, when the second through hole 15 is a vertical hole, the second through hole 15 is connected with a blood collecting device, and the blood collecting device is used for collecting the blood splashed by the second through hole 15, and is connected to the handle 12, so that the blood can be taken away along with the removal of the dilator 1 from the sheath, and no blood cleaning after puncturing is needed, so that the clean and tidy medical environment is maintained. The blood collecting device comprises an inserting part 17 and a blood storage part 18, wherein the inserting part 17 is in a ring shape, a blood inlet channel 173 penetrating through two ends of the inserting part is formed, the inserting part 17 stretches into the second through hole 15 and is matched with the side wall of the second through hole 15 to be mounted and sealed, the blood collecting device can be fixed on the handle 12, the blood storage part 18 is connected with one end of the inserting part 17, the blood storage part 18 is provided with a blood storage cavity 181, the blood inlet channel 173 is communicated with the channel 13, and the blood storage part 18 is used for collecting blood passing through the second through hole 15 and preventing the blood from splashing to the environment.
In some embodiments of the present invention, the blood storage part 18 is made of transparent material, so that the medical staff can observe whether the blood flow exists at the second through hole 15, such as the blood storage part 18, at the first time; the blood storage part 18 is provided with scale marks corresponding to the blood storage cavity 181 to mark the blood volume, so that medical staff can judge whether the dilator 1 needs to be pulled out after reaching the arterial trunk according to the blood volume. It will be appreciated that the blood storage part 18 may be provided in a bag, and may be made of plastic or plastic, or may be provided in a hollow tube, and may be made of plastic or glass, so as to achieve the effect of sealing and containing blood.
In some embodiments of the present invention, an annular clamping block 171 is disposed on the outer peripheral surface of the insertion portion 17, the annular clamping block 171 is horizontally disposed, a horizontal annular clamping groove 151 is disposed on the inner side wall of the second through hole 15, the annular clamping block 171 is matched with the annular clamping groove 151 in size, and the annular clamping block 171 is inserted into the annular clamping groove 151 when the insertion portion 17 is installed, and the two are in interference fit and tightly clamped, so that a better sealing effect is achieved between the insertion portion 17 and the inner side wall of the second through hole 15 while the fixation is firm, and the blood is prevented from overflowing from the gap between the inner side wall of the second through hole 15 and the insertion portion 17, thereby causing pollution. Further, the annular clamping block 171 may be made of soft materials such as rubber, so as to facilitate the insertion and extraction of the annular clamping groove 151, and also facilitate the installation and removal of the blood collection device.
In some embodiments of the present invention, a sealing ring 172 is disposed between the outer peripheral surface of the insertion portion 17 and the inner side wall of the second through hole 15, the sealing ring 172 is made of rubber or plastic, when the insertion portion 17 is inserted into the second through hole 15, the sealing ring 172 is pressed, the inner side of the sealing ring abuts against the insertion portion 17, the outer side abuts against the inner side wall of the second through hole 15, and sealing between the insertion portion 17 and the inner side wall of the second through hole 15 can be achieved through the sealing ring 172, so that blood leakage is further prevented.
As shown in fig. 1 and 6, the preferred embodiment of the present invention further provides an indwelling device for femoral artery puncture, which comprises the dilator 1 of the above embodiment, the sheath 2 and the second connecting portion 21, the sheath 2 is configured as a hollow cylinder, the length of the sheath 2 is smaller than that of the dilator 1, the sheath 2 is sleeved on the outer side of the dilator 1, and the inner diameter of the sheath 2 is matched with the outer diameter of the dilator 1 so as to tightly fit between the sheath 2 and the dilator 1. A third through hole 22 corresponding to the position of the first through hole 14 is formed on the peripheral surface of the sheath tube 2, and when the expander 1 and the sheath tube 2 are sleeved, the third through hole 22 is communicated with the first through hole 14, so that blood in a blood vessel can directly flow into the first channel 13 through the third channel 13; the second connecting portion 21 is connected to one end of the sheath tube 2, which faces the first connecting portion 16, the first connecting portion 16 is a ring table which is arranged around the main body 11, the second connecting portion 21 is a ring table which is arranged around the sheath tube 2, one side end face of the second connecting portion 21, which faces away from the sheath tube 2, is connected with the first connecting portion 16, the second connecting portion 21 and the first connecting portion 16 are detachably connected, and the sheath tube 2 and the expander 1 are firmly fixed in operation and are not easy to loose.
As shown in fig. 7, in some embodiments of the present invention, the present invention further includes a guide wire 3, where the guide wire 3 is disposed through the sheath 2, the guide wire 3 includes a body 31 and a bending portion 32, and an end of the guide wire 3 that enters the patient is bent to form the bending portion 32. The design of the elbow guide wire 3 with radian enables the guide wire 3 to adjust the direction of the guide wire 3 after entering the wound, even after entering the external blood vessel of the femoral artery trunk, the guide wire 3 can be placed on the femoral artery trunk by withdrawing and rotating the guide wire 3 to adjust the direction, thereby being beneficial to the adjustment angle of the guide wire 3, being convenient for accurately finding the arterial trunk and being beneficial to the placement of the subsequent sheath tube 2 and the expander 1. It will be appreciated that the end of the guidewire 3 that enters the body is the initial end and the end that enters the body is the final end.
Further, the diameter of the guide wire 3 gradually decreases from the body 31 towards the direction of the bending part 32, and the diameter of the tail end of the guide wire 3 is matched with the size of the second opening 121, so that the guide wire 3 plays a certain role in blocking the second opening 121 in the process of placing the dilator 1 sleeved with the sheath 2 along the guide wire 3, and along with the increase of the placement depth, blood is further led to enter the channel through the first through hole 14 and the first opening 111 and then is mainly splashed out through the second through hole 15, so that medical staff can judge the placement depth of the dilator 1 sleeved with the sheath 2 more easily through the bleeding amount of the second through hole 15.
The working process of the indwelling device for femoral artery puncture of the embodiment of the invention is as follows: after femoral artery puncture is successful, the guide wire 3 is inserted into a blood vessel through the puncture needle, the puncture needle is withdrawn, the dilator 1 with the sheath tube 2 sleeved outside is placed along the guide wire 3, when the dilator 1 with the sheath tube 2 sleeved outside reaches a proper position of an arterial trunk, blood enters a channel 13 in the dilator 1 through a third through hole 22 and a first through hole 14, reaches a second through hole 15 through the channel 13 and is splashed by the second through hole 15, an operator can know that the dilator 1 reaches a proper position of the arterial trunk, at the moment, the dilator 1 with the sheath tube 2 sleeved outside can be completely placed, the guide wire 3 and the dilator 1 are withdrawn, the sheath tube 2 is reserved in a patient, and the judgment mode can obtain a relatively accurate result without being judged through professional experience of medical staff and auxiliary judgment on X-ray, and ensures that the reserved position of the sheath tube 2 is correct after puncture. After the intravascular treatment is finished, the plugging tube 4 is inserted into the sheath tube 2, so that the sheath tube 2 is remained in the patient and is sealed and fixed by a sterile transparent dressing; in the next intravascular treatment (generally within 24 hours), the plugging tube 4 is pulled out to perform the interventional operation again without reestablishing the vascular channel.
As shown in fig. 2 and 6, in some embodiments of the present invention, the first connecting portion 16 includes a plug-in block 161 disposed towards the second connecting portion 21, the plug-in block 161 is disposed on an end surface of the first connecting portion 16 towards the second connecting portion 21, the second connecting portion 21 includes a plug-in groove 162 formed towards the first connecting portion 16, the plug-in groove 162 is formed on an end surface of the second connecting portion 21 towards the first connecting portion 16, the plug-in groove 162 is in size fit with the plug-in block 161, when the main body 11 is inserted into the sheath 2, the first connecting portion 16 moves towards the second connecting portion 21, the plug-in block 161 is inserted into the plug-in groove 162 to connect the first connecting portion 16 to the second connecting portion 21, when the plug-in block 161 is detached, the plug-in block 161 is pushed out of the plug-in groove 162 to release the first connecting portion 16 and the second connecting portion 21, and then the dilator 1 and the sheath 2 can be separated.
In some embodiments of the present invention, the second connection portion 21 includes a plug-in block disposed toward the second connection portion 21, the plug-in block is disposed on an end surface of the second connection portion 21 toward the first connection portion 16, the first connection portion 16 includes a plug-in groove formed toward the connection of the second connection portion 21, the plug-in groove is formed on an end surface of the first connection portion 16 toward the second connection portion 21, and the plug-in groove is in size fit with the plug-in block (not shown in the drawings).
In some embodiments of the present invention, a fastening portion (not shown in the drawings) is formed on one side end surface of the insertion block 161 protruding outwards, a fastening groove corresponding to the fastening portion in size and position is formed in the insertion groove 162, after the insertion block 161 is inserted into the insertion groove 162, the fastening portion is fastened with the fastening groove in a matching manner, so that the insertion block 161 and the insertion groove 162 are further fixed, and a limiting direction of the fastening portion and the fastening groove intersects with or is perpendicular to a limiting direction of the insertion block 161 and the insertion groove 162, so that the fastening between the first connection portion 16 and the second connection portion 21 is more firm due to the fastening portion and the fastening groove. Further, the buckling part is made of rubber or plastic stool soft materials, so that the buckling part can deform in the process of installation and disassembly, and the installation and the disassembly of the buckling part are facilitated.
In some embodiments of the present invention, a plurality of the inserting blocks 161 are provided, the plurality of inserting blocks 161 uniformly distribute the first connecting portion 16 to include a side end surface facing the second connecting portion 21, the second connecting portion 21 is also provided with a plurality of inserting grooves 162 corresponding to the plurality of inserting blocks 161, and the plurality of inserting grooves 162 and the inserting blocks 161 are provided to make the fixation between the first connecting portion 16 and the second connecting portion 21 more stable. As shown in fig. 2 and 6, preferably, two insertion blocks 161 are symmetrically arranged on two sides of the main body 11, two insertion grooves 162 are correspondingly arranged on two sides of the sheath 2, and the two insertion blocks 161 and the two insertion grooves 162 are respectively inserted when being installed, so that the connection stability between the first connection part 16 and the second connection part 21 is ensured together; further, the fastening portions on the two insertion blocks 161 are disposed opposite to each other.
In some embodiments of the present invention, the angle c between the extending direction of the bending portion 32 and the extending direction of the end of the body 31 facing the bending portion is greater than 45 °, which is matched with the angle of the direction of the inclined puncture of the medical staff, so as to be more beneficial for the medical staff to extend into the arterial trunk. Preferably, the angle between the bending part 32 and the body 31 is 60 degrees, which is adapted to the most common puncture angle of medical staff.
This device is after accomplishing femoral artery and is put into, withdraws from the sheath with expander and seal wire, carries out intravascular treatment through sheath intercommunication artery, if not to the inside cavity position of sheath shutoff after the treatment is accomplished, blood in the artery gets into the sheath and produces the thrombus, can push into the blood vessel with the thrombus in the sheath during the secondary treatment, probably causes vascular embolism, influences patient's life even. Thus, as shown in fig. 8, in some embodiments of the present invention, a blocking tube 4 is further included, the blocking tube 4 being inserted into the sheath tube 2 after the end of the intravascular treatment for blocking the hollow portion of the sheath tube 2, the outer circumferential surface of the blocking tube 4 being sized to fit the inner wall surface of the sheath tube 2 so that no gap remains between the sheath tube 2 and the blocking tube 4; the arrangement of the occluder prevents forward impingement of blood flow in the artery on the hollow portion of the sheath 2 during the indwelling of the sheath, preventing formation of a columnar thrombus in the sheath 2 when the sheath 2 is indwelled in the patient.
In some embodiments of the present invention, the occlusion tube 4 includes an occlusion body 41 and a third connecting portion 42, and the third connecting portion 42 cooperates with the second connecting portion 21 to fix the occlusion tube 4 to the sheath tube 2, where the occlusion body 41 has a length equal to that of the sheath tube 2, and the occlusion body 41 is solid, so that thrombus formation by blood in the occlusion body 41 can be prevented. Further, the spherical protrusion 43 is formed at the beginning of the occlusion tube 4 entering the body, so that the damage to the vessel wall caused by one end of the occlusion tube 4 can be prevented.
The working process of the invention is as follows: after the femoral artery is successfully punctured, a guide wire 3 is inserted into a blood vessel through a puncture needle, the puncture needle is withdrawn, a dilator 1 with a sheath tube 2 sleeved outside is placed along the guide wire 3, when the dilator 1 with the sheath tube 2 sleeved outside reaches the arterial trunk, blood enters a channel 13 in the dilator 1 through a third through hole 22 and a first through hole 14, reaches a second through hole 15 through the channel 13 and is flushed out through the second through hole 15, an operator can know that the dilator 1 reaches the arterial trunk, at the moment, the dilator 1 with the sheath tube 2 sleeved outside can be completely placed, the guide wire 3 and the dilator 1 are withdrawn, after the intravascular treatment is finished, a plugging tube 4 is inserted into the sheath tube 2, so that the sheath tube 2 is reserved in a patient, and the patient is sealed and fixed by a sterile transparent dressing; in the next intravascular treatment (generally within 24 hours), the plugging tube 4 is pulled out to perform the interventional operation again without reestablishing the vascular channel.
In summary, the embodiment of the invention provides a femoral artery puncture indwelling device and a dilator thereof, wherein an operator can judge whether the dilator 1 reaches a proper position according to the blood gushing condition, and the judgment mode can obtain a more accurate result without the professional experience judgment of medical staff and the auxiliary judgment of perspective on X rays, so that the indwelling position of a sheath tube 2 after puncture is ensured to be correct.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present invention, and these modifications and substitutions should also be considered as being within the scope of the present invention.
Claims (16)
1. A dilator, comprising:
the body stretches into the body of a patient, a channel is formed in the body, and a first through hole communicated with the channel is formed in the outer side face of the body;
a handle connected to one end of the main body facing the outside, wherein the channel extends from the main body to the handle, and a second through hole communicated with the channel is formed in the handle; and
and a first connection part for connecting with the sheath tube when the main body is inserted into the sheath tube.
2. The dilator of claim 1, wherein: the diameters of the first through hole and the second through hole are 0.5-1mm.
3. The dilator of claim 1, wherein: the distance between the first through hole and the second through hole in the length direction of the main body is 100-150mm.
4. The dilator of claim 1, wherein: the diameter of the opening of the first through hole and the second through hole on the inner side wall of the channel is a, and the diameter of the opening of the first through hole and the second through hole on the outer side face of the main body is b, wherein a is smaller than b.
5. The dilator of claim 4, wherein: the first via and the second via satisfy a/b <1/2.
6. The dilator of claim 1, wherein: the second through hole is connected with a blood collection device, the blood collection device comprises an inserting part and a blood storage part, the inserting part is provided with a blood inlet channel penetrating through two ends of the inserting part, the blood storage part is provided with a blood storage cavity, the blood storage part is connected to one end of the inserting part, the blood inlet channel is communicated with the blood storage cavity, the inserting part stretches into the second through hole, and the blood inlet channel is communicated with the channel.
7. The dilator of claim 6, wherein: the blood storage part is made of transparent materials, and scale marks are arranged on the blood storage part and correspond to the blood storage cavity to mark the blood volume.
8. The dilator of claim 6, wherein: the outer peripheral surface of the plug-in mounting part is provided with an annular clamping block, the inner side wall of the second through hole is provided with an annular clamping groove, and the annular clamping block is matched with the annular clamping groove in size.
9. The dilator of claim 6, wherein: and a sealing ring is arranged between the outer peripheral surface of the inserting part and the inner side wall of the second through hole.
10. An indwelling device for femoral artery puncture, comprising: comprising
The dilator of any one of claims 1-9;
the sheath tube is sleeved on the outer side of the expander, and a third through hole which is correspondingly communicated with the first through hole is formed in the sheath tube;
the second connecting part is detachably connected with the first connecting part.
11. The femoral artery puncture indwelling device of claim 10, wherein: the first connecting part comprises a plug-in block, the second connecting part is provided with a plug-in groove, and the plug-in groove is matched with the plug-in block in size to connect the first connecting part with the second connecting part; or (b)
The first connecting portion is provided with a plug-in groove, the second connecting portion comprises a plug-in block, and the plug-in groove is matched with the plug-in block in size so as to connect the first connecting portion with the second connecting portion.
12. The femoral artery puncture indwelling device of claim 11, wherein: the end face of one side of the plug-in block outwards protrudes to form a buckling part, and the inner wall of the plug-in groove is provided with a buckling groove matched with the buckling part in size.
13. The femoral artery puncture indwelling device of claim 11 or 12, wherein: the plug-in mounting blocks are provided with a plurality of plug-in mounting grooves, and the plug-in mounting grooves correspond to the plug-in mounting blocks in position.
14. The femoral artery puncture indwelling device of claim 10, wherein: the novel medical catheter also comprises a guide wire, wherein the guide wire penetrates through the sheath tube, the guide wire comprises a body and a bending part, and one end of the guide wire, which enters the patient, is bent to form the bending part.
15. The femoral artery puncture indwelling device of claim 14, wherein: the minimum included angle between the extending direction of the bending part and the extending direction of one end of the body, which faces the bending part, is larger than 45 degrees.
16. The femoral artery puncture indwelling device of claim 10, wherein: the device also comprises a blocking tube, wherein the blocking tube is inserted into the sheath tube after the intravascular interventional therapy is finished, and the size of the outer peripheral surface of the blocking tube is matched with the size of the inner wall surface of the sheath tube.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310861106.XA CN116831706B (en) | 2023-07-13 | 2023-07-13 | Indwelling device for femoral artery puncture and dilator thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310861106.XA CN116831706B (en) | 2023-07-13 | 2023-07-13 | Indwelling device for femoral artery puncture and dilator thereof |
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| CN116831706A true CN116831706A (en) | 2023-10-03 |
| CN116831706B CN116831706B (en) | 2024-03-08 |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6371968B1 (en) * | 1996-05-09 | 2002-04-16 | Olympus Optical Co., Ltd. | Cavity retaining tool for bone surgery, a cavity retaining tool for general surgery, an endoscopic surgery system involving the use of a cavity retaining tool, and a procedure for surgery |
| CN202776496U (en) * | 2012-09-17 | 2013-03-13 | 中国人民解放军第二军医大学 | Femoral artery puncture sheath with systemic arterial pressure monitoring function |
| US20130281850A1 (en) * | 2012-04-19 | 2013-10-24 | Terumo Kabushiki Kaisha | Method for diagnosis and treatment of artery |
| CN105232173A (en) * | 2015-11-12 | 2016-01-13 | 中国人民解放军第二军医大学 | Indwelling arteria femoralis puncture sheath and application thereof |
| CN106037893A (en) * | 2016-06-17 | 2016-10-26 | 李之印 | Endosocopic catheterization puncture needle |
| CN208769937U (en) * | 2017-12-18 | 2019-04-23 | 金华市中心医院 | A kind of left hand radial artery sheath extension sheath |
| CN110680973A (en) * | 2019-10-25 | 2020-01-14 | 毛坤剑 | Arteriovenous internal fistula puncture needle for blood purification |
| CN211131308U (en) * | 2019-10-22 | 2020-07-31 | 广东省第二人民医院（广东省卫生应急医院） | Puncture kit |
| CN216570135U (en) * | 2021-10-12 | 2022-05-24 | 福建医科大学 | Femoral vein puncture device |
-
2023
- 2023-07-13 CN CN202310861106.XA patent/CN116831706B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6371968B1 (en) * | 1996-05-09 | 2002-04-16 | Olympus Optical Co., Ltd. | Cavity retaining tool for bone surgery, a cavity retaining tool for general surgery, an endoscopic surgery system involving the use of a cavity retaining tool, and a procedure for surgery |
| US20130281850A1 (en) * | 2012-04-19 | 2013-10-24 | Terumo Kabushiki Kaisha | Method for diagnosis and treatment of artery |
| CN202776496U (en) * | 2012-09-17 | 2013-03-13 | 中国人民解放军第二军医大学 | Femoral artery puncture sheath with systemic arterial pressure monitoring function |
| CN105232173A (en) * | 2015-11-12 | 2016-01-13 | 中国人民解放军第二军医大学 | Indwelling arteria femoralis puncture sheath and application thereof |
| CN106037893A (en) * | 2016-06-17 | 2016-10-26 | 李之印 | Endosocopic catheterization puncture needle |
| CN208769937U (en) * | 2017-12-18 | 2019-04-23 | 金华市中心医院 | A kind of left hand radial artery sheath extension sheath |
| CN211131308U (en) * | 2019-10-22 | 2020-07-31 | 广东省第二人民医院（广东省卫生应急医院） | Puncture kit |
| CN110680973A (en) * | 2019-10-25 | 2020-01-14 | 毛坤剑 | Arteriovenous internal fistula puncture needle for blood purification |
| CN216570135U (en) * | 2021-10-12 | 2022-05-24 | 福建医科大学 | Femoral vein puncture device |
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| CN116831706B (en) | 2024-03-08 |
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