CN210355643U - Dilator for umbilical vein puncture - Google Patents
Dilator for umbilical vein puncture Download PDFInfo
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- CN210355643U CN210355643U CN201920799882.0U CN201920799882U CN210355643U CN 210355643 U CN210355643 U CN 210355643U CN 201920799882 U CN201920799882 U CN 201920799882U CN 210355643 U CN210355643 U CN 210355643U
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- umbilical vein
- dilator
- insertion section
- vein
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Abstract
The utility model provides an expander for umbilical vein puncture, including handheld portion and first extension piece, one end of first extension piece is the first insertion section that is used for inserting the umbilical vein, and the other end is connected the handheld portion, on the first insertion section by the tip of keeping away from handheld portion to the direction of connecting handheld portion be the structure that radial dimension grow gradually; a first insertion slot is provided on the first insertion section for insertion of a cannula of an umbilical vein. The utility model provides an expander for navel vein puncture, the tip of inserting the section is comparatively tiny be convenient for insert the navel vein in, the navel vein is propped open to the structure of radial dimension grow gradually afterwards, during the intubate inserts the navel vein along first insertion groove afterwards, so very big operation that makes things convenient for the intubate to insert the navel vein reduces the operation degree of difficulty of operation, saves time.
Description
Technical Field
The utility model relates to a medical instrument, concretely relates to an expander for navel vein puncture.
Background
Since the 80 s in the 20 th century, the umbilical vein intubation is one of the best routes for the administration of the neonatal asphyxia resuscitation, the umbilical vein has the advantages of large lumen, high success rate of the operation method and the like, and medicines, nutrient solutions, blood products and the like can be infused for premature infants and infants with extremely low birth weight through the umbilical vein intubation.
In the prior art, when the umbilical vein is cannulated, the edge of the reserved umbilical cord is lifted by two hemostatic forceps or sterile forceps to expose the umbilical vein and the umbilical artery, and then the cannula is clamped by an elbow fine forceps or is held by a hand to be inserted into the umbilical vein in a soft and slow rotating manner. The difficulty of this procedure is that the wall of the umbilical vein is usually in a collapsed state, the insertion of the cannula into the umbilical vein is not assisted by other devices, and if the cannula is slightly displaced, the end of the cannula will press against the umbilical vein and further collapse, which will prevent the insertion, and thus the insertion of the cannula into the umbilical vein often requires repeated operations.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an expander for navel vein puncture to solve the above-mentioned weak point among 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 portion;
the first expansion piece is provided with a first insertion section for inserting into the umbilical vein at one end, the other end of the first expansion piece is connected with the handheld part, and the first insertion section is of a structure with the radial size gradually increased from the end far away from the handheld part to the direction of connecting the handheld part;
a first insertion slot provided on the first insertion section for insertion of a cannula of an umbilical vein.
In the above dilator, the end of the first insertion section far away from the handle is an arc end.
In the above dilator, the curved end is inclined towards the central axis of the first insertion section.
In the above dilator, the radial section of the first insertion section is an arc-shaped structure, and the inner side surface of the arc-shaped structure is the insertion groove.
The above dilator further comprises:
one end of the second expansion piece is a second insertion section used for being inserted into the umbilical artery, the other end of the second expansion piece is connected with the handheld part, and the second insertion section is of a structure with the radial size gradually increased from the end part far away from the handheld part to the direction of connecting the handheld part;
a second insertion slot provided on the second insertion section for insertion of a cannula of an umbilical artery.
In the dilator, the hand-held part is provided with friction lines.
In the above dilator, the first insertion section comprises a plurality of connecting regions with successively increasing widths.
The dilator comprises two L-shaped elastic sheets, each elastic sheet comprises a vertical section and a horizontal section, the two elastic sheets are connected through the top ends of the vertical sections to form the handheld part, and the horizontal sections of the two elastic sheets are first expansion pieces;
the first insertion groove is formed between the two horizontal sections.
In the above dilator, the outer wall of the horizontal section is provided with a resistance part.
In the above dilator, the depth of the inner groove is one third to two thirds of the length of the horizontal section.
In the expander, when the two elastic sheets are attached, the first insertion groove is an inverted conical groove.
In the above dilator, the vertical section comprises a first section and a second section, the width of the first section is larger than that of the second section, the first section is provided with a handheld friction part, and the second section is connected with the horizontal section.
In the above dilator, the resistance portion is a wavy outer wall surface.
In the above expander, the right end of the horizontal section is arc-shaped.
In the technical scheme, the utility model provides an expander for navel vein puncture, the tip that inserts the section is comparatively tiny be convenient for insert the navel vein, and the navel vein is strutted to the structure of radial dimension grow gradually afterwards, and during the intubate inserted the navel vein along first insertion groove afterwards, so very big operation that makes things convenient for the intubate to insert the navel vein reduces the operation degree of difficulty of operation, saves time.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.
Fig. 1 is a schematic structural view of an expander provided in an embodiment of the present invention;
fig. 2 is a schematic structural view of a dilator according to another embodiment of the present invention;
FIG. 3 is a side view of a portion of a dilator according to yet another embodiment of the present invention;
FIG. 4 is a front view of a portion of a dilator according to yet another embodiment of the present invention;
FIG. 5 is a sectional view taken along line A-A of FIG. 4;
fig. 6 is a radial cross-sectional view of a first extension member according to yet another embodiment of the present invention;
fig. 7 is a schematic structural view of a dilator according to still another embodiment of the present invention;
fig. 8 is a schematic structural view of a dilator according to still another embodiment of the present invention;
fig. 9 is a schematic structural view of a dilator according to still another embodiment of the present invention;
FIG. 10 is a sectional view A-A of FIG. 9;
fig. 11 is a schematic structural view illustrating an opened state of the dilator according to still another embodiment of the present invention;
fig. 12 is a schematic structural view illustrating a closed state of the dilator according to still another embodiment of the present invention.
Description of reference numerals:
1. a hand-held portion; 1.1, a first section; 1.2, a second section; 2. a first extension member; 2.1, a first insertion section; 2.11, arc end; 3. a first insertion slot; 4. a second extension piece; 5. a second insertion slot; 6. a resistance portion.
Detailed Description
In order to make the technical solution 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 vertical, horizontal, left, right, top, bottom, and other orientation words are based on the description convenience, and the present invention provides an orientation relationship of each structure under a specific form, such as a spring plate, rather than limiting the position under any state, and even less absolutely limiting the claims. More specifically, refer to the utility model provides a shell fragment has two arms of different length, and when these two arms wherein longer vertical or basic vertical place, the position relation when shorter one end level or basic horizontal place and whole look to be L shape, vertical, level, left and right, top, end are all only to this kind of position relation. Thus, if the device is rotated by 90 degrees and turned over at this position, the position shown in fig. 7 is formed, and at this time, the vertical section is horizontally arranged, and the horizontal section is vertically arranged, and the relationship among the positions is also changed correspondingly. This is common general knowledge in daily life and will not be described in detail.
As shown in fig. 1-12, an expander for umbilical vein puncture provided by an embodiment of the present invention includes a handheld portion 1 and a first expanding member 2, one end of the first expanding member 2 is a first insertion section 2.1 for inserting into an umbilical vein, the other end is connected to the handheld portion 1, and a radial dimension of the first insertion section 2.1 from an end portion far away from the handheld portion 1 to a direction connecting to the handheld portion 1 is a structure that gradually increases; a first insertion groove 3 is provided on the first insertion section 2.1, which is used for insertion of a cannula of an umbilical vein.
Specifically, the hand-held part 1 is used for holding hands, and is of various structures which can be held by hands, such as a handle-shaped structure, the first expansion piece 2 is used for being inserted into the umbilical vein and expanding the umbilical vein to a certain extent, here, the expansion refers to the expansion of the umbilical vein (the umbilical vein is usually in a collapsed state), one end of the first expansion piece 2 is a first insertion section 2.1, the other end is connected with the handheld part 1, the first insertion section 2.1 is a section inserted into the umbilical vein, the radial dimension of the structure is gradually increased from the tail end (i.e. the end far away from the handheld part 1) to the connecting end (i.e. the end connected with the handheld part 1), namely the structure that the tail end is relatively thin and the connecting end is relatively wide, the purpose of this is that the small end can be easily inserted into the umbilical vein, and as the insertion proceeds, the wide portion enters the umbilical vein forcing the umbilical vein from the collapsed state to the expanded state. 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 the present embodiment, as shown in fig. 1 and 7, preferably, the first insertion section 2.1 comprises a structure formed by connecting a plurality of connecting areas with successively increasing widths in sequence, so as to form a gradually increasing radial size. The umbilical veins of the newborn with different weights have different diameters, the connecting areas with different widths are suitable for the umbilical veins with different diameters, and the insertion depth of the dilator is adjusted according to the dilation 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 an elongated body, the ends of which form a tapered structure, but preferably, the first insert section 2.1 is an arcuate plate, where the radial dimension refers to the maximum dimension on both sides of the arc. The umbilical vein can be better opened by the arc-shaped plate.
In this embodiment, the first insertion section 2.1 is further provided with a first insertion groove 3, the first insertion groove 3 is arranged along the first insertion section 2.1, the extending directions of the first insertion groove 3 and the first insertion groove are the same, and the first insertion groove 3 is used for inserting the insertion tube of the umbilical vein. When the first insertion section 2.1 is a flat plate, the first insertion groove 3 is a groove-shaped structure opened on the first insertion section 2.1. When the first insertion section 2.1 is an arc-shaped plate, the first insertion groove 3 is a space naturally formed on the inner side of the arc-shaped plate.
In this embodiment, the handheld portion 1 is provided with friction lines, so that friction force during handheld operation can be increased conveniently.
When the umbilical vein dilator is used, during an 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 holds the dilator by the hand-held part 1, inserts the first insertion section 2.1 into the umbilical vein from the tail end, opens the umbilical vein by the first insertion section 2.1, then slightly inclines the first insertion section 2.1, attaches the cannula of the umbilical vein to the first insertion section 2.1, inserts the umbilical vein into the first insertion groove 3, after the end of the cannula is inserted into the umbilical vein to a certain depth, the power of inserting the first insertion section 2.1 into the umbilical vein can be manual pressure, the first insertion section 2.1 can also be configured to be heavy, naturally insert by means of gravity, or both can be provided, for example, when the length of the umbilical vein is 1cm, the dilator is drawn out, and then the insertion of the cannula is the same as that of the prior art, which is not described.
The embodiment of the utility model provides an expander for navel vein puncture, the tip of inserting the section is comparatively tiny be convenient for insert the navel vein in, the navel vein is propped open to the structure of radial dimension grow gradually afterwards, during the intubate inserts the navel vein along first insertion groove 3 afterwards, so very big operation that makes things convenient for the intubate to insert the navel vein reduces the operation degree of difficulty of operation, saves time.
The utility model provides a further embodiment, preferred, keep away from on the first section of inserting 2.1 the tip of handheld portion 1 also is used for the male end to be arc end 2.11 promptly, and arc end 2.11 reduces the injury to the navel vein, reduces the first section of inserting 2.1 probability to the damage of navel vein.
In a further embodiment of the invention, further, as shown in fig. 2, the curved end 2.11 is inclined towards the central axis of the first insertion section 2.1, the central axis refers to that when the first insertion section 2.1 is in an arc-shaped structure, the central axis is the central axis of the cylinder in which the arc-shaped structure is positioned, that is, the outer wall surfaces of the upper part and the middle part of the first insertion section 2.1 are positioned on the same cylinder surface, while the lower curved end 2.11 area is located inside the cylindrical surface, the arrangement being such that the first insertion section 2.1 can be inserted into the central area of the umbilical vein by means of the curved end 2.11, during insertion of the first insertion section 2.1, the curved ends 2.11 are each located in the central region of the umbilical vein, and need not the laminating or butt umbilical vein's inner wall, arc end 2.11 is comparatively sharp, is located umbilical vein's central zone and reduces the probability that probably takes place the injury to umbilical vein.
In the embodiments 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-shaped structure, the inner side surface of the arc-shaped structure is the insertion groove, and optionally, the central angle of the arc-shaped structure may be smaller than, equal to or larger than 180 degrees, that is, may be smaller than, equal to or larger than a semicircle.
In still another embodiment of the present invention, as shown in fig. 7, the umbilical artery further includes a second expansion piece 4, one end of the second expansion piece 4 is a second insertion section for inserting into the umbilical artery, the other end is connected to the handheld portion 1, and the second insertion section has a structure that the radial dimension gradually increases from the end portion far away from the handheld portion 1 to the direction connecting to the handheld portion 1; a second insertion slot 5 is provided on the second insertion section for insertion of a cannula of an umbilical artery. The second expansion piece 4 and the first expansion piece 2 are arranged in two different orientations of the handpiece 1, the two differing in structure and function only in that the first expansion piece 2 is intended to be inserted into the umbilical vein and the second expansion piece 4 is intended to be inserted into the umbilical artery, the second expansion piece 4 being also relatively small in size due to the small size of the umbilical artery, except that, in addition, the remaining structure of both can be directly referenced.
In the embodiments described above, the first extension member 2 is a single structure, such as a plate. In another embodiment, as shown in fig. 9-11, another different structural idea of different bending is provided, the dilator includes two L-shaped elastic pieces, the two elastic pieces are connected with each other by the top end of the L-shaped vertical section to form the handheld portion 1, and the L-shaped horizontal section of the two elastic pieces is the first dilator 2; the first insertion groove 3 is formed between the two horizontal sections. That is, two vertical sections form the hand-held portion 1, two horizontal sections form the first expansion piece 2, and the first insertion groove 3 is a space formed between the two horizontal sections.
Specifically, the elastic pieces may be metal pieces or plastic pieces, and the elasticity of the elastic pieces means that one ends of the two elastic pieces are connected and the other ends thereof are naturally opened to form the state shown in the figure in a natural state free from other external forces and only gravity, and when pressure is applied to the other ends, the other ends of the two elastic pieces can be closed to form the state shown in fig. 11, and when the applied pressure disappears, the elastic pieces naturally return to the opened state shown in fig. 11 from the closed state shown in fig. 12, which is called the elasticity of the elastic pieces.
In this embodiment, the L-shape, the vertical section and the horizontal section should be broadly understood, that is, the L-shape, the vertical position and the horizontal position are basically, more specifically, the included angle between the two sections of the L-shape may be between 85 to 95 degrees, even 80 to 100 degrees, and the L-shape is approximately, that is, the L-shape meets the requirement.
In this embodiment, the vertical section is longer in size and is a hand-held portion 1 for holding by a doctor, the horizontal section is shorter in size and is a first expansion member 2 for inserting into the umbilical vein of a newborn, and the resistance portion 6 is a structure for increasing 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 firstly holds and presses the vertical section to fold the two elastic sheets, then inserts the horizontal section into the umbilical vein under the assistance of a hand, then releases the pressure on the vertical section, so that the two elastic sheets naturally open, the horizontal section also opens to open the umbilical vein, an opening space is formed between the two horizontal sections at the L-shaped bending part, and the opening space is used for observing the first insertion groove 3, is shown in figure 11 at the moment and is also an insertion channel of the insertion tube, so that the insertion tube is inserted. And because the effect of resistance portion 6, have certain frictional force between horizontal segment and the umbilical cord, can be better maintain the open position of horizontal segment in the umbilical vein.
The embodiment of the utility model provides an expander for navel vein puncture, during the operation, the umbilical vein is inserted to the horizontal segment of L shape shell fragment, relies on the dimensional change of elastic force and horizontal segment to open the umbilical vein naturally, and the doctor can insert the intubate through first insertion groove 3 between two shell fragments, so open not only convenient operation of umbilical vein from the inboard, safe and reliable can not harm the umbilical vein moreover.
The utility model provides a further embodiment, preferred, be provided with the inner groovy on the inside wall of the left end of horizontal segment, inner groovy depth direction with the length direction of horizontal segment is unanimous, also promptly when the horizontal segment inserts the umbilical cord and opens the back, and two inner groovies form a great operation and the first insertion groove 3 of observation, the intubate male operation of being convenient for.
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 section, that is, the first insertion groove 3 completely covers the horizontal section, and at this time, the insertion and observation of the cannula are both convenient. However, the outer wall of the horizontal section is in a raised cylindrical shape, and the difficulty of inserting into the umbilical vein is increased. Therefore, it is preferable that the depth of the first insertion groove 3 is one third to two thirds of the length of the horizontal section, that is, the portion of the horizontal section where the first insertion groove 3 is not provided is flat and narrow, thus facilitating the operation of inserting it into the umbilical vein, and the portion where the first insertion groove 3 is provided is located outside the umbilical cord, which is opened to increase the field of vision and the operation space.
More preferably, when the two elastic sheets are attached to each other, the first insertion groove 3 formed by abutting the two inner grooves is an inverted cone-shaped groove, such as an inverted cone-shaped groove, and the groove body with the gradually reduced size facilitates spatial arrangement of the horizontal section.
The utility model provides a still another embodiment, it is preferred, vertical section includes first section 1.1 and second section 1.2, first section 1.1's width is greater than second section 1.2, be provided with handheld friction portion on the first section 1.1, second section 1.2 with the horizontal segment links to each other, and first section 1.1 is used for handheld, and the great promotion of width is felt, and handheld friction portion promotes handheld frictional force, and it is handheld to be convenient for.
The utility model provides a further embodiment, it is preferred, resistance portion 6 is the outer wall of wavy, and the outer wall of wavy is comparatively level and smooth, both is convenient for insert, can promote certain resistance again.
The utility model provides a further embodiment, it is preferred, the right-hand member of horizontal segment is convex, and this end also is the one end that the horizontal segment is used for inserting the umbilical vein, and the damage of horizontal segment to the umbilical vein can be reduced to the columniform structure.
Furthermore, the outer wall surface of the right end of the horizontal section is arc-shaped, and the radian of the arc is consistent or basically consistent with the radian of an inner hole when the umbilical vein is opened, so that the opening of the umbilical vein is more natural and smooth.
Still further, can the horizontal segment divide into four parts from left to right, two parts in the left side set up the inner groovy, and the outer wall of two parts in the right side is arc and platykurtic respectively, and wherein the arc is located between platykurtic and the inner groovy part, also the platykurtic is located rightmost end, and the flat section can make things convenient for the inserting of horizontal segment like this, and the arc section can open the umbilical vein naturally, kills 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 the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (6)
1. A dilator for umbilical vein puncture, comprising:
a hand-held portion;
the first expansion piece is provided with a first insertion section for inserting into the umbilical vein at one end, the other end of the first expansion piece is connected with the handheld part, and the first insertion section is of a structure with the radial size gradually increased from the end far away from the handheld part to the direction of connecting the handheld part;
a first insertion slot provided on the first insertion section for insertion of a cannula of an umbilical vein.
2. The dilator of claim 1, wherein an end of the first insertion section distal to the handle is an arcuate end.
3. The dilator of claim 1, wherein a radial cross section of the first insertion section is an arc-shaped structure, an inner side surface of the arc-shaped structure being the insertion groove.
4. The dilator of claim 1, further comprising:
one end of the second expansion piece is a second insertion section used for being inserted into the umbilical artery, the other end of the second expansion piece is connected with the handheld part, and the second insertion section is of a structure with the radial size gradually increased from the end part far away from the handheld part to the direction of connecting the handheld part;
a second insertion slot provided on the second insertion section for insertion of a cannula of an umbilical artery.
5. The dilator of claim 1, wherein the hand-held portion has friction lines disposed thereon.
6. The dilator of claim 1, wherein the first insertion section comprises a plurality of sequentially increasing width connecting regions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920799882.0U CN210355643U (en) | 2019-05-29 | 2019-05-29 | Dilator for umbilical vein puncture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920799882.0U CN210355643U (en) | 2019-05-29 | 2019-05-29 | Dilator for umbilical vein puncture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210355643U true CN210355643U (en) | 2020-04-21 |
Family
ID=70262396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920799882.0U Expired - Fee Related CN210355643U (en) | 2019-05-29 | 2019-05-29 | Dilator for umbilical vein puncture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210355643U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110141764A (en) * | 2019-05-29 | 2019-08-20 | 首都医科大学附属北京儿童医院 | Expander for umbilical vein puncture |
-
2019
- 2019-05-29 CN CN201920799882.0U patent/CN210355643U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110141764A (en) * | 2019-05-29 | 2019-08-20 | 首都医科大学附属北京儿童医院 | Expander for umbilical vein puncture |
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| GR01 | Patent grant | ||
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Granted publication date: 20200421 |