CN220213044U - Midwifery rupture of membranes needle - Google Patents
Midwifery rupture of membranes needle Download PDFInfo
- Publication number
- CN220213044U CN220213044U CN202320110996.6U CN202320110996U CN220213044U CN 220213044 U CN220213044 U CN 220213044U CN 202320110996 U CN202320110996 U CN 202320110996U CN 220213044 U CN220213044 U CN 220213044U
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- needle
- outer sleeve
- limiting
- feeding rod
- side wall
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- 239000012528 membrane Substances 0.000 title claims description 14
- 230000000670 limiting effect Effects 0.000 claims abstract description 69
- 238000003780 insertion Methods 0.000 claims description 5
- 230000037431 insertion Effects 0.000 claims description 5
- 210000004379 membrane Anatomy 0.000 description 11
- 210000001691 amnion Anatomy 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 238000004080 punching Methods 0.000 description 4
- 210000003754 fetus Anatomy 0.000 description 2
- 208000012260 Accidental injury Diseases 0.000 description 1
- 208000012266 Needlestick injury Diseases 0.000 description 1
- 208000036029 Uterine contractions during pregnancy Diseases 0.000 description 1
- 210000004381 amniotic fluid Anatomy 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000000823 artificial membrane Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000035606 childbirth Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000002219 extraembryonic membrane Anatomy 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model discloses a midwifery membrane-breaking needle, which comprises an outer sleeve, a needle inlet rod and a needle mechanism, wherein one end of the outer sleeve is of an opening structure, and the other end of the outer sleeve is provided with a through hole; one end of the needle feeding rod penetrates through the through hole and is arranged in the outer sleeve, a needle head is arranged at one end of the needle feeding rod, which is positioned in the outer sleeve, and a piston connected with the inner wall of the outer sleeve is arranged on the outer side wall of the needle feeding rod; the puncture needle mechanism is arranged on the needle feeding rod and used for rapidly driving the needle feeding rod to advance a certain distance along the inner wall of the outer sleeve during working, and comprises a limiting plate which is positioned at one end of the needle feeding rod away from the needle head and has a diameter larger than that of the through hole, a limiting groove which is arranged on the outer sleeve, a limiting block which is connected with one end of the limiting plate away from the needle feeding rod and corresponds to the limiting groove, and a spring which is positioned at the other end of the outer sleeve, which is contacted with the side wall of the piston, and is connected with the inner wall of the outer sleeve.
Description
Technical Field
The utility model relates to the technical field of medical instruments, in particular to a midwifery membrane rupture needle.
Background
The artificial rupture of membranes is a common labor induction and delivery assisting mode in the natural delivery process, and the amniotic membrane at the uterine opening is ruptured by manual operation so as to observe amniotic fluid, strengthen uterine contraction and accelerate the progress of labor. When the artificial membrane rupture operation is clinically carried out, part of fingers of one hand of a doctor extend into the birth canal for guiding, and the other hand of the doctor sends the needle point (or the medical forceps) into the birth canal to puncture (or tear) the amniotic membrane. This approach has certain disadvantages: the doctor needs the high collaborative operation of both hands, and the operation is inconvenient and the degree of difficulty is big, because the operation degree of difficulty is big, leads to the success rate low, probably needs many times of operations. On one hand, the labor time is prolonged, and the pain of the puerpera is increased; on the other hand, the possibility of accidentally injuring the puerpera and exposing the puerpera is increased, and the safety coefficient of childbirth is reduced.
The utility model patent with the name of 'an obstetric fetal membrane needle' disclosed by reference publication number CN201282993 comprises a fixed seat, a blade or a needle point, an adjusting rod and a finger ring, wherein the tail ends of the blade and the needle point are connected with the adjusting rod, the adjusting rod is connected to the fixed seat in a threaded manner, and the finger ring is arranged on one side of the fixed seat. When the utility model is used, the finger ring is sleeved on the index finger or the middle finger of a doctor, the doctor stretches the finger sleeved with the finger ring into the obstetric canal of the puerpera, and when the finger touches the amniotic membrane, the other hand rotates the adjusting rod, so that the blade or the needle point stretches out to puncture the amniotic membrane. When the finger ring type puerpera puncture needle is used, only one hand of a doctor stretches into a puerpera birth canal, the position of a blade or a needle point is approximately determined by the fixing seat connected with the finger ring, the amniotic membrane can be punctured by the other hand only by rotating the adjusting rod, the operation difficulty of the doctor is reduced, the structure stretching into the puerpera birth canal is guided by fingers of the doctor, and the possibility of causing accidental injury to a puerpera and a fetus is low.
However, this utility model has the following drawbacks: the adjusting rod is connected to the fixing seat through threads, the structural size is considered, the pitch of the threads is small, a certain stroke is needed for enabling the blade or the needle point to enter the working area, the doctor rotates the adjusting rod for a long time, and the pain of a puerpera is increased.
Disclosure of Invention
This section is intended to outline some aspects of embodiments of the utility model and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description summary and in the title of the application, to avoid obscuring the purpose of this section, the description summary and the title of the utility model, which should not be used to limit the scope of the utility model.
Therefore, the utility model aims to provide the midwifery membrane-breaking needle which replaces the traditional membrane-breaking needle and solves the problems that the membrane-breaking process is slower and the pain of a puerpera is increased.
In order to solve the technical problems, according to one aspect of the present utility model, the following technical solutions are provided:
a midwifery rupture needle, comprising:
one end of the outer sleeve is of an opening structure, and the other end of the outer sleeve is provided with a through hole;
one end of the needle feeding rod penetrates through the through hole and is arranged in the outer sleeve, a needle head is arranged at one end of the needle feeding rod, which is positioned in the outer sleeve, and a piston connected with the inner wall of the outer sleeve is arranged on the outer side wall of the needle feeding rod;
the needle mechanism is arranged on the needle feeding rod and used for rapidly driving the needle feeding rod to advance along the inner wall of the outer sleeve by a certain distance during working, and comprises a limiting plate, a limiting groove, a limiting block and a spring, wherein the limiting plate is positioned at one end of the needle feeding rod, which is far away from the needle, and the diameter of the limiting plate is larger than that of the through hole, the limiting groove is formed in the outer sleeve, one end of the limiting plate, which is far away from the needle feeding rod, is connected with one end of the limiting plate, the limiting block corresponds to the limiting groove, and the spring is positioned at the inner end of the outer sleeve, is contacted with the side wall of the piston, and the other end of the limiting plate is connected with the inner wall of the outer sleeve.
As an optimal scheme of the midwifery membrane-breaking needle, a lifting button is arranged at one end of the limiting block, which is far away from the needle inserting rod.
As a preferable scheme of the midwifery membrane-breaking needle, one end of the outer sleeve, which is close to the through hole, is connected with a limiting seat, and the limiting seat is of an annular structure;
the limiting groove is located on the outer side wall of the limiting seat.
As a preferable scheme of the midwifery membrane-breaking needle, the limit groove comprises a first groove body which is uniformly distributed on the side wall of the limit seat and matched with the limit block, and a second groove body which is uniformly distributed on the side wall of the limit seat and matched with the limit block;
the length of the first groove body is greater than that of the second groove body, and the first groove bodies and the second groove bodies are distributed at intervals.
As a preferable scheme of the midwifery membrane-breaking needle, an annular thread groove is formed in the side wall of one end, close to the through hole, of the outer sleeve, and a thread tube matched with the annular thread groove is arranged on the side wall of the limiting seat.
As a preferable scheme of the midwifery membrane-breaking needle, an air bag with an inflation inlet is sleeved on the outer side wall of the outer sleeve.
Compared with the prior art, the midwifery membrane-breaking needle has the beneficial effects that the needle-inserting rod is driven by the needle-inserting mechanism to rapidly advance along the inner wall of the outer sleeve by a certain distance when in use, and then the needle head is driven to complete the membrane-puncturing operation, so that the mode of the needle of the traditional membrane-breaking needle is replaced, and the problems of slower membrane puncturing process and increased pain of a puerpera are avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following detailed description of the embodiments of the present utility model will be given with reference to the accompanying drawings, which are to be understood as merely some embodiments of the present utility model, and from which other drawings can be obtained by those skilled in the art without inventive faculty. Wherein:
FIG. 1 is a schematic diagram showing the structure of a midwifery membrane-piercing needle before membrane piercing;
FIG. 2 is a schematic view of the structure of the midwifery membrane-piercing needle of the present utility model;
FIG. 3 is a cross-sectional view of a midwifery rupture needle of the present utility model after puncturing the membrane;
FIG. 4 is a structural exploded view of a midwifery membrane-rupturing needle of the present utility model;
FIG. 5 is a schematic view of the structure of an outer sleeve of a midwifery membrane-rupturing needle of the present utility model;
FIG. 6 is a schematic view of the structure of the needle rod of the midwifery membrane-breaking needle of the utility model;
FIG. 7 is a schematic view of a limiting seat of a midwifery membrane rupture needle according to the present utility model;
in the figure: 100. an outer sleeve; 110. a through hole; 130. a limit seat; 130a, threaded pipe; 140. an annular thread groove; 200. a needle bar; 210. a needle; 220. a piston; 300. a lancet mechanism; 310. a limiting plate; 320. a limit groove; 320a, a first groove body; 320b, a second groove body; 330. a limiting block; 330a, lifting buttons; 340. a spring; 400. an air bag; 410. and an air charging port.
Detailed Description
In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings.
Next, the present utility model will be described in detail with reference to the drawings, wherein the sectional view of the device structure is not partially enlarged to general scale for the convenience of description, and the drawings are only examples, which should not limit the scope of the present utility model. In addition, the three-dimensional dimensions of length, width and depth should be included in actual fabrication.
For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, embodiments of the present utility model will be described in further detail below with reference to the accompanying drawings.
The utility model provides a midwifery membrane-breaking needle, which replaces the traditional mode of a puncture needle of the membrane-breaking needle, so that the problems of slower membrane-puncturing process and increased pain of a puerpera are avoided.
Fig. 1 to 7 are schematic structural views of a midwifery membrane-breaking needle according to the present utility model, and fig. 1 to 7 are detailed descriptions of the midwifery membrane-breaking needle.
Example 1
Referring to fig. 1-7, the present utility model discloses a midwifery rupture needle, the main body portion of which comprises an outer sleeve 100, a needle insertion shaft 200, and a lancet mechanism 300.
Referring to fig. 1-4, outer sleeve 100 is used for protecting needle 210, avoiding damage to birth canal caused by needle 210 during needle insertion, one end of outer sleeve 100 has an opening structure, and the other end has a through hole 110, which is used for penetrating through amnion for needle insertion and convenient connection of needle stick when needle 210 is used for needle insertion;
in this embodiment, one end of the outer sleeve 100 adjacent to the through hole 110 is connected with a limiting seat 130 for forming a limiting groove 320 to limit the limiting block 330; the limiting seat 130 has an annular structure, and is used for facilitating the movement of the needle bar 200 and the limiting plate 310;
wherein, the limiting groove 320 is located on the outer side wall of the limiting seat 130;
referring to fig. 4-5, an annular thread groove 140 is formed on a side wall of one end of the outer sleeve 100 adjacent to the through hole 110, and is used for being connected with a threaded pipe 130a, and a threaded pipe 130a matched with the annular thread groove 140 is arranged on a side wall of the limiting seat 130, so that threaded connection between the limiting seat 130 and the outer sleeve 100 is realized, and disassembly and assembly are facilitated.
Referring to fig. 1-3, needle bar 200 is used for driving needle 210 to move to complete a film punching operation, one end of needle bar 200 is installed in outer sleeve 100 through hole 110, one end of needle bar 200 located in outer sleeve 100 is provided with needle 210 for punching film, and the outer side wall of needle bar 200 is provided with piston 220 connected with the inner wall of outer sleeve 100 for keeping needle bar 200 moving stably along the inner wall of outer sleeve 100 without shaking needle 210.
Referring to fig. 3, the lancet mechanism 300 is mounted on the needle feeding rod 200, and is used for rapidly driving the needle feeding rod 200 to advance a certain distance along the inner wall of the outer sleeve 100 during operation, so as to finish the film puncturing operation, pain of a parturient woman is reduced, the lancet mechanism 300 comprises a limiting plate 310 which is positioned at one end of the needle feeding rod 200 far away from the needle 210 and has a diameter larger than that of the through hole 110, a limiting groove 320 which is formed on the outer sleeve 100, a limiting block 330 which is connected with one end of the limiting plate 310 far away from the needle feeding rod 200 and corresponds to the limiting groove 320, and a spring 340 which is positioned at one end of the outer sleeve 100, which is contacted with the side wall of the piston 220, and is connected with the inner wall of the outer sleeve 100, wherein before film puncturing operation, the limiting block 330 drives the piston 220 to squeeze the spring 340 under the limiting effect of the limiting groove 320, and the limiting groove 320 resets the spring 340 to rapidly drive the piston 220 to move, and then drives the needle feeding rod 200 and the needle 210 to rapidly advance until the limiting plate 310 contacts with the side wall of the outer sleeve 100, and the film puncturing operation is finished at the opening of the outer sleeve 100;
referring to fig. 3, in the present embodiment, a lifting button 330a is disposed at an end of the stopper 330 remote from the needle bar 200, for facilitating movement of the pulling stopper 330;
referring to fig. 7, the limiting groove 320 includes a first groove body 320a uniformly distributed on the sidewall of the limiting seat 130 and matched with the limiting block 330, and a second groove body 320b uniformly distributed on the sidewall of the limiting seat 130 and matched with the limiting block 330;
referring to fig. 7, the length of the first slot 320a is greater than that of the second slot 320b, and a plurality of first slots 320a are spaced apart from the second slot 320b, and before film punching, the limiting block 330 is located in the second slot 320b, and when film punching, the limiting block 330 is pulled out of the second slot 320b by the lifting button 330a and then rotated to the first slot 320a, and the limiting block 330 enters the first slot 320a under the driving of the reset operation of the spring 340;
since the distance of the limiting plate 310 from the side wall of the outer sleeve 100 during the pricking is directly related to the advancing distance of the needle 210, in order to ensure that the depth of the needle 210 during the pricking does not affect the fetus in the amniotic membrane, the mounting position of the limiting plate 310 is tested in the previous test.
In this embodiment, the specific usage flow is as follows: before the puncturing membrane is inserted into the needle, the needle 210 is connected with the second groove 320b by the limiting block 330 and is positioned in the outer sleeve 100, when a doctor moves the outer sleeve 100 to the position of the amniotic membrane in the delivery channel to perform puncturing membrane, the limiting block 330 is pulled out of the second groove 320b by the lifting button 330a, the spring 340 is in extrusion deformation by the piston 220, then the limiting block 330 is rotated until the position of the limiting block 330 is overlapped with the first groove 320a, the spring 340 resets, the piston 220 and the needle inserting rod 200 are driven to move, the needle 210 is driven to move until the limiting plate 310 contacts with the side wall of the outer sleeve 100, the needle 210 stops moving, the puncturing membrane operation is completed, and the whole process is completed relatively rapidly under the driving of the resetting operation of the spring 340.
Example 2
On the basis of embodiment 1, referring to fig. 1-4, in order to prevent the outer sleeve 100 from being unstable in the birth canal and causing unstable shaking of the needle 210 in the process of puncturing the membrane, an air bag 400 with an air charging port 410 is sleeved on the outer side wall of the outer sleeve 100, and is used for charging the air bag 400 through the air charging port 410 after the outer sleeve 100 enters the birth canal, so that the birth canal is supported through the inflated air bag 400, and the stability between the outer sleeve 100 and the birth canal is further maintained.
Although the utility model has been described hereinabove with reference to embodiments, various modifications thereof may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model. In particular, the features of the disclosed embodiments may be combined with each other in any manner as long as there is no structural conflict, and the exhaustive description of these combinations is not given in this specification merely for the sake of omitting the descriptions and saving resources. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.
Claims (6)
1. A midwifery rupture needle, comprising:
an outer sleeve (100) with one end having an opening structure and the other end having a through hole (110);
one end of the needle feeding rod (200) penetrates through the through hole (110) and is installed in the outer sleeve (100), a needle head (210) is arranged at one end of the needle feeding rod (200) positioned in the outer sleeve (100), and a piston (220) connected with the inner wall of the outer sleeve (100) is arranged on the outer side wall of the needle feeding rod (200);
the needle mechanism (300) is installed on the needle feeding rod (200) and is used for rapidly driving the needle feeding rod (200) to advance along the inner wall of the outer sleeve (100) by a certain distance in operation, the needle mechanism (300) comprises a limiting plate (310) which is positioned at one end, far away from the needle head (210), of the needle feeding rod (200) and has a diameter larger than that of the through hole (110), a limiting groove (320) formed in the outer sleeve (100), a limiting block (330) which is connected with one end, far away from the needle feeding rod (200), of the limiting plate (310) and corresponds to the limiting groove (320), and a spring (340) which is positioned in the outer sleeve (100), one end of the spring is contacted with the side wall of the piston (220), and the other end of the spring is connected with the inner wall of the outer sleeve (100).
2. The midwifery membrane rupture needle according to claim 1, wherein a lifting button (330 a) is arranged at one end of the limiting block (330) away from the needle insertion rod (200).
3. The midwifery membrane-breaking needle according to claim 2, wherein one end of the outer sleeve (100) adjacent to the through hole (110) is connected with a limiting seat (130), and the limiting seat (130) is of an annular structure;
the limiting groove (320) is located on the outer side wall of the limiting seat (130).
4. A midwifery membrane-breaking needle according to claim 3, characterized in that the limit groove (320) comprises a first groove body (320 a) which is uniformly distributed on the side wall of the limit seat (130) and matched with the limit block (330) and a second groove body (320 b) which is uniformly distributed on the side wall of the limit seat (130) and matched with the limit block (330);
the length of the first groove body (320 a) is greater than that of the second groove body (320 b), and a plurality of first groove bodies (320 a) and the second groove bodies (320 b) are distributed at intervals.
5. A delivery rupture needle according to claim 3, wherein the outer sleeve (100) is provided with an annular thread groove (140) adjacent to the side wall of one end of the through hole (110), and the side wall of the limit seat (130) is provided with a threaded tube (130 a) matched with the annular thread groove (140).
6. The midwifery membrane rupturing needle according to claim 1, wherein the outer side wall of the outer sleeve (100) is sleeved with an air bag (400) with an inflation inlet (410).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320110996.6U CN220213044U (en) | 2023-01-19 | 2023-01-19 | Midwifery rupture of membranes needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320110996.6U CN220213044U (en) | 2023-01-19 | 2023-01-19 | Midwifery rupture of membranes needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220213044U true CN220213044U (en) | 2023-12-22 |
Family
ID=89185917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320110996.6U Active CN220213044U (en) | 2023-01-19 | 2023-01-19 | Midwifery rupture of membranes needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220213044U (en) |
-
2023
- 2023-01-19 CN CN202320110996.6U patent/CN220213044U/en active Active
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