CN110141764B - Dilator for umbilical vein puncture - Google Patents
Dilator for umbilical vein puncture Download PDFInfo
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- CN110141764B CN110141764B CN201910459615.3A CN201910459615A CN110141764B CN 110141764 B CN110141764 B CN 110141764B CN 201910459615 A CN201910459615 A CN 201910459615A CN 110141764 B CN110141764 B CN 110141764B
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- umbilical vein
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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
- A61M29/00—Dilators with or without means for introducing media, e.g. remedies
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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
- A61M2210/00—Anatomical parts of the body
- A61M2210/12—Blood circulatory system
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- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
本发明提供了一种用于脐静脉穿刺的扩张器，包括手持部以及第一扩展件，第一扩展件的一端为用于插入脐静脉的第一插入段，另一端连接所述手持部，所述第一插入段上由远离手持部的端部到连接手持部的方向为径向尺寸逐渐变大的结构；第一插入槽设置于所述第一插入段上，其用于脐静脉的插管的插入。本发明提供的用于脐静脉穿刺的扩张器，插入段的端部较为细小便于插入脐静脉中，随后径向尺寸逐渐变大的结构撑开脐静脉，随后插管沿着第一插入槽插入脐静脉中，如此极大的方便插管插入脐静脉的操作，降低手术的操作难度，节省时间。
The present invention provides a dilator for umbilical vein puncture, comprising a handheld portion and a first extension piece, one end of the first extension piece is a first insertion section for inserting into the umbilical vein, and the other end is connected to the handheld portion, and the first insertion section has a structure with a gradually increasing radial dimension from the end away from the handheld portion to the direction connected to the handheld portion; a first insertion groove is provided on the first insertion section, which is used for inserting a cannula into the umbilical vein. The dilator for umbilical vein puncture provided by the present invention has a relatively small end of the insertion section for easy insertion into the umbilical vein, and then the structure with a gradually increasing radial dimension stretches the umbilical vein, and then the cannula is inserted into the umbilical vein along the first insertion groove, which greatly facilitates the operation of inserting the cannula into the umbilical vein, reduces the difficulty of the operation, and saves time.
Description
Technical Field
The invention relates to a medical apparatus, in particular to a dilator for umbilical vein puncture.
Background
Since the 80 s of the 20 th century, umbilical vein catheterization is one of the best routes of administration for neonatal asphyxia resuscitation, and umbilical veins have the advantages of large lumen, high success rate of operation methods and the like, and can be used for inputting medicines, nutrient solutions, blood products and the like for premature infants and very low birth weight infants.
In the prior art, when the umbilical vein is catheterized, the edge of the reserved umbilical cord is lifted by two hemostatic forceps or sterile forceps to expose the umbilical vein and umbilical artery, and then the catheterization is clamped by an elbow fine forceps or the catheterization is held by hand, so that the catheterization is gently and slowly rotated to be inserted into the umbilical vein. The difficulty with this procedure is that the walls of the umbilical vein are normally in a collapsed condition, and the cannula is inserted into the umbilical vein without additional assistance, and if slightly offset, the ends of the cannula will squeeze the umbilical vein further into collapse and prevent insertion, thus often requiring repeated procedures to insert the cannula into the umbilical vein.
Disclosure of Invention
The object of the present invention is to provide a dilator for umbilical vein puncture which solves the above-mentioned drawbacks of the prior art.
In order to achieve the above object, the present invention provides the following technical solutions:
A dilator for umbilical vein puncture, comprising:
A hand-held part;
One end of the first expansion piece is a first insertion section for being inserted into the umbilical vein, the other end of the first expansion piece is connected with the handheld part, and the first insertion section is in a structure with gradually enlarged radial dimension from the end part far away from the handheld part to the direction of connecting the handheld part;
A first insertion slot is provided on the first insertion section for insertion of a cannula of an umbilical vein.
In the above expander, the end of the first insertion section far away from the holding part is an arc-shaped end.
In the above-described dilator, the arcuate end is biased toward the central axis of the first insertion section.
In the expander, the radial section of the first insertion section is of an arc-shaped structure, and the inner side surface of the arc-shaped structure is the insertion groove.
The above-mentioned expander, further comprising:
One end of the second expansion piece is a second insertion section for being inserted into the umbilical artery, the other end of the second expansion piece is connected with the handheld part, and the radial dimension of the second insertion section is gradually increased from the end part far away from the handheld part to the direction of connecting the handheld part;
a second insertion slot is provided on the second insertion section for insertion of a cannula of the umbilical artery.
In the expander, friction lines are arranged on the handheld part.
The expander is characterized in that the first insertion section comprises a plurality of connecting areas with sequentially increased widths which are sequentially connected.
The expander comprises two L-shaped elastic pieces, wherein each elastic piece comprises a vertical section and a horizontal section, the two elastic pieces are connected with the top ends of the vertical sections to form the handheld part, and the horizontal sections of the two elastic pieces are first expansion pieces;
The first insertion groove is formed between the two horizontal sections.
In the expander, the outer wall of the horizontal section is provided with the resistance part.
In the expander, the depth of the inner groove is one third to two thirds of the length of the horizontal section.
According to the expander, when the two elastic sheets are attached, the first insertion groove is an inverted conical groove.
The expander comprises a vertical section and a second section, wherein the width of the first section is larger than that of the second section, a hand-held friction part is arranged on the first section, and the second section is connected with the horizontal section.
In the expander, the resistance part is a wavy outer wall surface.
In the expander, the right end of the horizontal section is arc-shaped.
In the technical scheme, the expander for umbilical vein puncture provided by the invention has the advantages that the end part of the insertion section is smaller and is convenient to insert into an umbilical vein, then the umbilical vein is supported by the structure with gradually enlarged radial dimension, and then the insertion tube is inserted into the umbilical vein along the first insertion groove, so that the operation of inserting the insertion tube into the umbilical vein is greatly facilitated, the operation difficulty of an operation is reduced, and the time is saved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.
FIG. 1 is a schematic view of a dilator according to an embodiment of the present invention;
FIG. 2 is a schematic view of a dilator according to another embodiment of the present invention;
FIG. 3 is a side view of a portion of a dilator provided in accordance with yet another embodiment of the present invention;
FIG. 4 is a front view of a portion of a dilator provided in accordance with yet another embodiment of the present invention;
FIG. 5 is a cross-sectional view A-A of FIG. 4;
FIG. 6 is a radial cross-sectional view of a first extender provided in yet another embodiment of the present invention;
FIG. 7 is a schematic view of a dilator according to still another embodiment of the present invention;
FIG. 8 is a schematic view of a dilator according to still another embodiment of the present invention;
FIG. 9 is a schematic view of a dilator according to still another embodiment of the present invention;
FIG. 10 is a cross-sectional view A-A of FIG. 9;
FIG. 11 is a schematic view of a stent according to still another embodiment of the present invention in its expanded state;
fig. 12 is a schematic view of a closure state of a dilator according to still another embodiment of the present invention.
Reference numerals illustrate:
1. A hand-held part; 1.1 parts, a first section, 1.2 parts, a second section, 2 parts, a first expansion piece, 2.1 parts, a first insertion section, 2.11 parts, an arc-shaped end, 3 parts, a first insertion groove, 4 parts, a second expansion piece, 5 parts, a second insertion groove and 6 parts.
Detailed Description
In order to make the technical scheme of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.
In the embodiments of the present invention, the azimuth terms of vertical, horizontal, left, right, top, bottom, etc. are based on the convenience of description, and are the azimuth relation of each structure, such as the elastic sheet, provided by the present invention in a specific form, but not the position limitation in any state, and not the absolute limitation of the claims. More specifically, the spring plate provided by the invention has two arms with different lengths, when one of the two arms is vertically or basically vertically arranged, the shorter end is horizontally or basically horizontally arranged and is in an L-shaped overall position, and the vertical, horizontal, left, right, top and bottom are only aimed at the position. Thus, if rotated 90 degrees and turned over in this position, the position shown in fig. 7 is formed, in which the vertical section is placed horizontally and the horizontal section is placed vertically, and the positional relationship is changed accordingly. This is common general knowledge in daily life and is not described in detail.
As shown in fig. 1-12, the dilator for umbilical vein puncture provided by the embodiment of the invention comprises a handheld part 1 and a first expansion piece 2, wherein one end of the first expansion piece 2 is a first insertion section 2.1 for being inserted into an umbilical vein, the other end of the first expansion piece 2 is connected with the handheld part 1, the first insertion section 2.1 is in a structure with gradually enlarged radial dimension from the end far away from the handheld part 1 to the direction connecting the handheld part 1, and a first insertion groove 3 is arranged on the first insertion section 2.1 and is used for inserting a cannula of the umbilical vein.
Specifically, the hand holding portion 1 is used for holding, and is in various structures that can be held by hand, such as a handle-shaped structure, the first expansion member 2 is used for inserting into and expanding the umbilical vein to a certain extent, where expansion refers to that the umbilical vein is opened (the umbilical vein is usually in a collapsed state), one end of the first expansion member 2 is a first insertion section 2.1, the other end of the first expansion member 2 is connected with the hand holding portion 1, the first insertion section 2.1 is a section inserted into the umbilical vein, the radial dimension of the first insertion section is gradually increased from the end (i.e. the end far from the hand holding portion 1) to the connecting end (i.e. the end connected with the hand holding portion 1), namely, the end is relatively small, and the connecting end is relatively wide, the effect is that the small end can be easily inserted into the umbilical vein, and the wide part enters the umbilical vein to force the umbilical vein to be opened from the collapsed state along with the insertion. Preferably, the width of the tail end is 2mm, the width of the connecting end is 4mm, and the middle part is in smooth transition.
In this embodiment, as shown in fig. 1 and 7, it is preferable that the first insertion section 2.1 includes a structure in which a plurality of connection regions having sequentially increased widths are sequentially connected to form a gradually increasing radial dimension. The umbilical vein of newborn with different weights has different diameters, the connecting areas with different widths adapt to umbilical veins with different diameters, and the insertion depth of the expander is adjusted according to the expansion effect of the umbilical veins in the insertion process.
In this embodiment, the first insert section 2.1 may be a flat plate structure, such as a strip, with tapered ends, but preferably the first insert section 2.1 is an arcuate plate, where the radial dimension refers to the largest dimension of the sides of the arc. The arc plate can better open umbilical vein.
In this embodiment, the first insertion section 2.1 is further provided with a first insertion groove 3, the first insertion groove 3 is disposed along the first insertion section 2.1, the extension directions of the first insertion groove 3 and the first insertion section are the same, and the first insertion groove 3 is used for insertion of the umbilical vein cannula. When the first insertion section 2.1 is a flat plate, the first insertion groove 3 is a groove structure formed on the first insertion section 2.1. And when the first insertion section 2.1 is an arc-shaped plate, the first insertion groove 3 is a space naturally formed inside the arc-shaped plate.
In this embodiment, friction lines are provided on the hand-holding portion 1, so that the friction force during holding is increased.
When in use, in operation, after the hemostatic forceps or the sterile forceps lift the edge of the reserved umbilical cord to expose the umbilical vein and the umbilical artery, a doctor can hold the expander by the hand-held part 1, insert the first insertion section 2.1 into the umbilical vein from the tail end, open the umbilical vein by the first insertion section 2.1, then slightly incline the first insertion section 2.1, attach the cannula of the umbilical vein to the first insertion groove 3 on the first insertion section 2.1 to insert the umbilical vein, and after the end part of the cannula is inserted into the umbilical vein by a certain depth, the power of the first insertion section 2.1 for inserting the umbilical vein can be manual pressure, the first insertion section 2.1 can be configured heavier, or both can be naturally inserted by gravity, for example, when 1cm, the expander is drawn out, and then the cannula is inserted as in the prior art, which is not repeated.
According to the expander for umbilical vein puncture provided by the embodiment of the invention, the end part of the insertion section is smaller and is convenient to insert into an umbilical vein, then the umbilical vein is expanded by the structure with gradually enlarged radial dimension, and then the insertion tube is inserted into the umbilical vein along the first insertion groove 3, so that the operation of inserting the insertion tube into the umbilical vein is greatly facilitated, the operation difficulty of an operation is reduced, and the time is saved.
In another embodiment provided by the invention, preferably, the end of the first insertion section 2.1 far from the hand-holding part 1, i.e. the end for insertion, is an arc-shaped end 2.11, and the arc-shaped end 2.11 reduces damage to the umbilical vein and reduces the damage probability of the first insertion section 2.1 to the umbilical vein.
In still another embodiment of the present invention, as further shown in fig. 2, the arc end 2.11 is inclined towards the central axis of the first insertion section 2.1, where the central axis refers to the central axis of the cylinder where the arc structure is located when the first insertion section 2.1 is in an arc structure, that is, the outer wall surfaces of the upper portion and the middle portion of the first insertion section 2.1 are located on the same cylindrical surface, and the area of the arc end 2.11 of the lower portion is located on the inner side of the cylindrical surface, so that the first insertion section 2.1 can be inserted into the central area of the umbilical vein by means of the arc end 2.11, and during the insertion of the first insertion section 2.1, the arc end 2.11 is located in the central area of the umbilical vein without being attached to or abutting against the inner wall of the umbilical vein, and the arc end 2.11 is relatively sharp, and the central area of the umbilical vein is located in the central area of the umbilical vein, so as to reduce the possibility of injury to the umbilical vein.
In each embodiment of the present invention, as shown in fig. 4 to 6, preferably, the radial cross section of the first insertion section 2.1 is an arc structure, and the inner side surface of the arc structure is the insertion groove, and optionally, the central angle of the arc structure may be less than, equal to or greater than 180 degrees, that is, less than, equal to or greater than a semicircle.
In still another embodiment, as shown in fig. 7, the umbilical artery insertion device further comprises a second expansion piece 4, wherein one end of the second expansion piece 4 is a second insertion section for insertion into an umbilical artery, the other end of the second expansion piece is connected with the hand-held part 1, the radial dimension of the second insertion section gradually increases from the end away from the hand-held part 1 to the direction of connecting the hand-held part 1, and a second insertion groove 5 is formed in the second insertion section and is used for insertion of an umbilical artery insertion tube. The second expansion member 4 and the first expansion member 2 are arranged in two different directions of the handpiece 1, which differ in structure and function only in that the first expansion member 2 is used for insertion into an expanded umbilical vein, the second expansion member 4 is used for insertion into an expanded umbilical artery, and the size of the second expansion member 4 is relatively small due to the small size of the umbilical artery, except that the remaining structures of both can be directly referred to.
In the previous embodiments, the first expansion member 2 is of a single structure, such as a sheet material. In another embodiment, as shown in fig. 9-11, another different structural concept of bending is provided, the expander comprises two L-shaped elastic pieces, the two elastic pieces are connected by the top ends of the L-shaped vertical sections to form the hand-held part 1, the L-shaped horizontal sections of the two elastic pieces are first expansion pieces 2, and the first insertion groove 3 is formed between the two horizontal sections. I.e. two vertical segments forming the hand-held part 1 and two horizontal segments forming the first expansion element 2, the first insertion slot 3 being the space formed between the two horizontal segments.
Specifically, the elastic piece may be a metal piece or a plastic piece, and the elasticity of the elastic piece refers to that one end of the two elastic pieces is connected and the other end is naturally opened under the natural state that no other external force is applied and only gravity is applied, so as to form a state shown in the figure, and when the other end is applied with pressure, the other ends of the two elastic pieces can be folded to form a state shown in the figure 11, and when the applied pressure is eliminated, the elastic piece naturally returns to the open state of the figure 11 from the folded state of the figure 12, so-called elasticity of the elastic piece.
In this embodiment, the L-shape, the vertical section, and the horizontal section should be understood in a broad sense, that is, the L-shape, the vertical position, and the horizontal position are basically the L-shape, more specifically, the included angle between the two L-shape sections may be between 85-95 degrees, even between 80-100 degrees, and the L-shape is approximately L-shape, that is, meets the requirements.
In this embodiment, the vertical section has a longer size, which is the hand-held portion 1 for a doctor to hold, the horizontal section has a shorter size, which is the first expansion member 2 for insertion into the umbilical vein of a newborn, and the resistance portion 6 has a structure for enhancing friction force, such as a corrugated structure, a convex structure, or a concave structure.
When the dilator provided by the embodiment is used, a doctor holds and presses the vertical sections to fold the two elastic sheets, then inserts the horizontal sections into the umbilical vein with the assistance of the hands, then releases the pressure on the vertical sections to enable the two elastic sheets to open naturally, the horizontal sections of the two elastic sheets also open to open the umbilical vein, an open space is formed between the two horizontal sections at the L-shaped bending part at the moment, the open space is used for a first insertion groove 3, and the open space is used for observation, and is also used as an insertion channel of an insertion tube for insertion of the insertion tube at the moment. And due to the action of the resistance part 6, a certain friction force is formed between the horizontal segment and the umbilical cord, so that the open position of the horizontal segment in the umbilical vein can be well maintained.
According to the dilator for umbilical vein puncture, provided by the embodiment of the invention, during operation, the horizontal section of the L-shaped elastic sheet is inserted into an umbilical vein, the umbilical vein is naturally opened by means of elastic force and dimensional change of the horizontal section, and a doctor can insert an insertion tube through the first insertion groove 3 between the two elastic sheets, so that the umbilical vein is opened from the inner side, and the operation is convenient, safe and reliable, and the umbilical vein is not damaged.
In another embodiment provided by the invention, preferably, the inner side wall at the left end of the horizontal section is provided with an inner groove, and the depth direction of the inner groove is consistent with the length direction of the horizontal section, namely, when the horizontal section is inserted into an umbilical cord and opened, the two inner grooves form a first insertion groove 3 which is larger in operation and observation, so that the insertion operation of an insertion tube is facilitated.
In this embodiment, the depth of the first insertion groove 3 may be the same as or substantially the same as the length of the horizontal segment, i.e. the first insertion groove 3 completely covers the horizontal segment, and insertion and observation of the cannula are convenient. However, the outer wall of the horizontal section is in a bulge cylinder shape, and the difficulty of inserting the umbilical vein is increased. It is therefore preferred that the depth of the first insertion groove 3 is one third to two thirds of the length of the horizontal segment, i.e. the portion of the horizontal segment where the first insertion groove 3 is not provided is relatively flat and narrow, so as to facilitate its insertion into the umbilical vein, while the portion where the first insertion groove 3 is provided is located outside the umbilical cord, which is opened to increase the field of view and the operation space.
More preferably, when the two elastic sheets are attached, the first insertion groove 3 formed by abutting the two inner grooves is an inverted conical groove, such as an inverted conical groove, and the groove body with gradually smaller size is convenient for the space arrangement of the horizontal section.
In still another embodiment provided by the invention, preferably, the vertical section comprises a first section 1.1 and a second section 1.2, the width of the first section 1.1 is larger than that of the second section 1.2, a handheld friction part is arranged on the first section 1.1, the second section 1.2 is connected with the horizontal section, the first section 1.1 is used for being held, the width is larger, the handfeel is improved, and the handheld friction part improves the handheld friction force, so that the handheld friction part is convenient to hold.
In still another embodiment of the present invention, preferably, the resistance portion 6 is a wavy outer wall surface, and the wavy outer wall surface is smoother, so that the insertion is convenient, and a certain resistance can be raised.
In still another embodiment of the present invention, preferably, the right end of the horizontal segment is in a circular arc shape, and the right end is also one end of the horizontal segment for inserting into an umbilical vein, and the cylindrical structure can reduce the damage of the horizontal segment to the umbilical vein.
Furthermore, the outer wall surface of the right end of the horizontal section is arc-shaped, and the radian of the arc-shaped arc is consistent or basically consistent with the radian of the inner hole when the umbilical vein is opened, so that the umbilical vein is opened more naturally and smoothly.
Still further, can the horizontal segment divide into four parts from left to right, left side two parts set up the inner groovy, and the outer wall of right side two parts is arc and platykurtic respectively, and wherein the arc is located platykurtic and inner groovy part between, and flat section is located the right-most promptly, so flat section can make things convenient for the horizontal segment to insert, and the arc section can open the umbilical vein naturally, two birds with one stone.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the invention, which is defined by the appended claims.
Claims (1)
1. A dilator for umbilical vein puncture, comprising:
A hand-held part;
A first expansion piece, one end of which is a first insertion section for being inserted into umbilical vein, and the other end of which is connected with the hand-held part;
a first insertion groove provided on the first insertion section for insertion of a cannula of an umbilical vein;
the expander comprises two L-shaped elastic pieces, wherein the two elastic pieces are connected with the top ends of L-shaped vertical sections to form the handheld part, and the L-shaped horizontal sections of the two elastic pieces are the first expansion pieces;
One ends of the two elastic sheets are connected, the other ends of the two elastic sheets are naturally opened, and when pressure is applied to the other ends of the two elastic sheets, the other ends of the two elastic sheets are closed;
An inner groove is formed in the inner side wall of the left end of the horizontal section, the depth direction of the inner groove is consistent with the length direction of the horizontal section, and when the two elastic sheets are folded, a first insertion groove formed by butt joint of the two inner grooves is an inverted cone groove;
The right end of the horizontal section is arc-shaped, and the end of the horizontal section is used for being inserted into an umbilical vein;
the depth of the first insertion groove is one third to two thirds of the length of the horizontal section, and the part provided with the first insertion groove is positioned on the outer side of the umbilical cord;
the first insertion section is provided with a resistance part for improving friction force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910459615.3A CN110141764B (en) | 2019-05-29 | 2019-05-29 | Dilator for umbilical vein puncture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910459615.3A CN110141764B (en) | 2019-05-29 | 2019-05-29 | Dilator for umbilical vein puncture |
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| CN110141764A CN110141764A (en) | 2019-08-20 |
| CN110141764B true CN110141764B (en) | 2025-02-07 |
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| CN201910459615.3A Active CN110141764B (en) | 2019-05-29 | 2019-05-29 | Dilator for umbilical vein puncture |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111420158B (en) * | 2020-02-23 | 2022-06-21 | 济南市儿童医院（山东大学齐鲁儿童医院） | Neonate umbilical vein injection auxiliary device |
| CN111358513B (en) * | 2020-02-23 | 2022-10-18 | 济南市儿童医院（山东大学齐鲁儿童医院） | Neonate umbilical vein expanding frame |
| CN113288259B (en) * | 2021-06-04 | 2022-07-26 | 江苏泰科博曼医疗器械有限公司 | Blood vessel anastomotic supporting and clamping device |
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| Publication number | Publication date |
|---|---|
| CN110141764A (en) | 2019-08-20 |
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