CN114569216B - Puncture needle assembly for reducing tire - Google Patents
Puncture needle assembly for reducing tire Download PDFInfo
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- CN114569216B CN114569216B CN202210489203.6A CN202210489203A CN114569216B CN 114569216 B CN114569216 B CN 114569216B CN 202210489203 A CN202210489203 A CN 202210489203A CN 114569216 B CN114569216 B CN 114569216B
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- needle
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- 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
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- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/42—Gynaecological or obstetrical instruments or methods
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- Pregnancy & Childbirth (AREA)
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention provides a puncture needle assembly for reducing a fetus, which comprises a needle sleeve, a guide needle core and an air bag needle core, wherein the guide needle core is arranged in the needle sleeve in a penetrating manner so as to guide the needle sleeve to enter a pregnant sac; the air bag needle core comprises a body and an air bag arranged at the end part of the body close to the needle head, a cavity extending along the length direction of the body is formed in the body, air holes are formed on the wall of part of the cavity, and the air holes and the air bag are correspondingly arranged to inflate the air bag; the guide needle core is drawn out from the needle sleeve, and the air sac needle core is arranged in the needle sleeve in a penetrating mode so that the air sac can enter the pregnant sac. The fetal reduction puncture needle assembly uses the compression function of the air bag to replace medicine injection to reduce the fetus, can accurately act on one fetus, cannot influence other fetuses, has definite effect, and has low possibility of fetal heart rebound.
Description
Technical Field
The invention relates to the technical field of puncture needles, in particular to a puncture needle assembly for reducing a tire.
Background
At present, for the tire reduction of multiple tires, more unstable factors exist, the risk is high, and the effect is poor. The commonly used method for reducing the fetus with multiple fetuses is medicine injection for reducing the fetus, most of the medicines are potassium chloride and hypertonic sodium chloride, but because branch blood vessels are communicated among the multiple fetuses, the phenomena of fetus stopping sometimes occur in all fetuses after the medicine injection, and the pregnancy failure is caused; sometimes, during the process of fetal reduction, the fetal heart of the injected medicine stops beating, but after a period of blood circulation, the fetal reduction medicine is taken away along with the circulation, the heart beat which is originally in a paralytic state for a short time jumps again, and the patient has to face the dilemma of fetal reduction again.
Disclosure of Invention
The invention provides a puncture needle assembly for reducing a fetus, which aims to solve the technical problems of multiple unstable factors and poor effect of fetus reduction in the prior art in drug injection.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the invention provides a puncture needle assembly for reducing a fetus, which comprises a needle sleeve, a guide needle core and an air bag needle core, wherein the guide needle core is arranged in the needle sleeve in a penetrating manner so as to guide the needle sleeve to enter a pregnant sac; the air bag needle core comprises a body and an air bag arranged at the end part of the body close to the needle head, a cavity extending along the length direction of the body is formed in the body, air holes are formed on the wall of part of the cavity, and the air holes and the air bag are correspondingly arranged to inflate the air bag; the guide needle core is drawn out from the needle sleeve, and the air bag needle core is arranged in the needle sleeve in a penetrating way so that the air bag enters the pregnant sac; the external pressure of the air bag is 30-90 psi.
Further, the body and the airbag are of an integrally formed structure.
Further, the air bag is wrapped around the end portion, close to the needle, of the body.
Further, the thickness of the air bag is 2 mm-5 mm.
Furthermore, the number of the air holes is multiple, and the air holes are arranged in rows at intervals.
Further, the material of the body is selected from one or more of polyurethane, silica gel and polyvinyl chloride.
Further, the body includes the nylon yarn, the body is formed by nylon yarn and one or more material combination in polyurethane, silica gel, polyvinyl chloride.
Further, the material of the guide needle core is selected from one or more of polyurethane, silica gel and polyvinyl chloride; and a bone material is packaged at the end part of the guide needle core close to the needle head.
Further, the bone material is selected from potassium salts and/or calcium salts.
Furthermore, the size of the bone material along the length direction of the guide needle core is 3 mm-5 mm.
Furthermore, the guide needle core comprises nylon wires, and the guide needle core is formed by combining the nylon wires with one or more materials of polyurethane, silica gel and polyvinyl chloride.
Furthermore, a bone material is packaged at the end part of the needle core of the air bag, which is close to the needle head, and the distance between the bone material and the needle head of the needle core of the air bag is smaller than that between the air bag and the needle head of the needle core of the air bag.
Further, the bone material is selected from potassium and/or calcium salts.
Furthermore, the size of the bone material along the length direction of the air bag needle core is 3 mm-5 mm.
According to the puncture needle assembly for reducing the fetal rhythm, the guide needle core and the needle sleeve firstly enter the pregnant sac, then the guide needle core is taken out, the needle core of the air sac penetrates into the pregnant sac through the needle sleeve, the air sac is inflated through the cavity in the needle core body of the air sac and the air holes in the wall of the cavity, the compression function of the inflated air sac is used for blocking the cardiovascular blood circulation of the fetus, and the purpose of reducing the fetal rhythm is achieved. This subtract child pjncture needle subassembly uses the oppression function of gasbag to replace the medicine injection and subtracts the child, can act on a foetus accurately, can not exert an influence to other foetuses, and the effect is clear and definite, and the possibility that the fetal heart is repeated appears is little.
Drawings
FIG. 1 is a schematic view of a structure of a needle sleeve and a balloon core in a tire reduction puncture needle assembly provided by an embodiment of the present invention;
FIG. 2 is a schematic view of a structure of a needle sheath and a guide needle core in the tire reduction puncture needle assembly provided by the embodiment of the invention;
figure 3 is a schematic view of the construction of the balloon wick of figure 1.
Description of the reference numerals:
1. a needle sleeve; 2. a guide stylet; 3. an air bag needle core; 31. a body; 311. a cavity; 312. air holes; 32. an air bag; 4. a bone material.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 to 3, the present application provides a tire reduction puncture needle assembly, which includes a needle sheath 1, a guide needle core 2 and a balloon needle core 3, wherein the guide needle core 2 is arranged in the needle sheath 1 to guide the needle sheath 1 to enter a pregnant balloon; the air bag needle core 3 comprises a body 31 and an air bag 32 arranged at the end part of the body 31 close to the needle head, wherein a cavity 311 extending along the length direction of the body 31 is formed in the body 31, an air hole 312 is formed on the wall of part of the cavity 311, and the air hole 312 is arranged corresponding to the air bag 32 to inflate the air bag 32; the guide needle core 2 is drawn out from the needle sleeve 1, and the air bag needle core 3 is arranged in the needle sleeve 1 in a penetrating way so that the air bag 32 enters the pregnant sac; the bladder 32 has an external pressure of 30psi to 90psi.
At present, the fetal reduction is mainly carried out by a medicament injection mode, and the condition that a plurality of fetuses stop to cause pregnancy failure or fetal heart beats again after a short time usually occurs, so that a patient faces the dilemma of fetal reduction failure. The fetal reduction puncture needle assembly provided by the embodiment of the application can adopt the air bag 32 to press the function to block the cardiovascular blood circulation of a fetus, and can keep a certain time, so that the fetal reduction can be accurately carried out.
According to the puncture needle assembly for reducing the fetal heart rate, the guide needle core 2 and the needle sleeve 1 firstly enter the pregnant sac, then the guide needle core 2 is taken out, the air sac needle core 3 penetrates into the pregnant sac through the needle sleeve 1, the air sac 32 is inflated through the cavity 311 in the body 31 of the air sac needle core 3 and the air hole 312 in the wall of the cavity 311, the pressure generated in the air sac 32, namely the external pressure of the air sac 32, is at least 30psi, the compression function of the air sac 32 after inflation is used for blocking the cardiovascular blood circulation of the fetus, and the purpose of reducing the fetal heart rate is achieved. The fetal reduction puncture needle assembly uses the compression function of the air bag 32 to replace medicine injection to reduce the fetus, can accurately act on one fetus, cannot influence other fetuses, has definite effect and low possibility of fetal heart rebound.
In the puncture needle assembly for reducing the tire in the embodiment of the application, the needle sleeve 1 can be a common needle sleeve 1 in the prior art, and is generally a steel needle, so that no special requirement is required in the embodiment of the application. The guide needle core 2 can be a common needle core and is used for penetrating into the pregnant sac together with the needle sleeve 1 to prevent the leakage of amniotic fluid. The balloon 32 on the balloon core 3 may be disposed on the side of the body 31 near the needle end, or may surround the end of the body 31 near the needle, that is, disposed on the periphery of the body 31 near the needle end. For the convenience of the balloon core 3 and better connection between the balloon 32 and the body 31, a certain distance is provided between the balloon 32 and the end face of the needle. The connection between the air bag 32 and the body 31 can be formed integrally, or can be a reliable fixing mode such as bonding, connection through a connecting piece and the like, so as to ensure that the air bag 32 can be fixed on the body 31 without being separated after entering into the pregnant bag and inflating. In the embodiment of the present application, the external pressure of the bladder 32 reaches at least 30psi to ensure that the bladder 32 exerts sufficient pressure on the cardiovascular system of the fetus, thereby ensuring successful fetal reduction. When the air bag 32 is inflated, an automatic air inlet device can be used, namely, the automatic air inlet device is installed at the tail part of the air bag needle core 3, the automatic air inlet device is used for inflating the cavity 311 in the air bag needle core 3, the air bag 32 is inflated through the air hole 312, and meanwhile, the air pressure in the air bag 32 is monitored through the automatic air inlet device. Other devices or equipment for facilitating air intake, such as a syringe, may also be used to inflate the bladder 32.
In some embodiments, the body 31 and the bladder 32 are integrally formed. The body 31 and the air bag 32 are integrally formed, so that the stable connection between the body 31 and the air bag 32 can be better ensured, and the air bag needle core 3 cannot be separated from the body 31 when penetrating into the pregnant bag for use. The material of the balloon 32 may be selected from materials that are flexible, capable of being inflated and deflated multiple times, and reusable. The material of the air bag 32 is selected from one or more of polyurethane, polyvinyl chloride, rubber, latex, silica gel and plastic.
In some embodiments, the balloon 32 surrounds the end of the body 31 near the needle. The air bag 32 surrounds the body 31, that is, the air bag 32 encloses a part of the body 31 therein, so as to better exert a pressing effect after inflation. In this case, the number of joints between the airbag 32 and the main body 31 is small, and the possibility of air leakage can be reduced.
In some embodiments, the bladder 32 has a thickness of 2mm to 5mm. In the present embodiment, the thickness of the airbag 32 is maintained within the above range to function better. When the thickness of the air bag 32 is more than 5mm, the air bag 32 is not easy to inflate so as to expand; when the thickness of the bladder 32 is less than 2mm, the bladder 32 is easily ruptured during inflation, resulting in failure of tire reduction.
In some embodiments, the number of the air holes 312 is multiple, and the multiple air holes 312 are arranged in rows and at intervals. The arrangement of the plurality of air holes 312 can facilitate the inflation of the air bag 32, and the air holes 312 arranged in rows at intervals can uniformly intake air, so that the air bag 32 is inflated more safely and stably. The plurality of air holes 312 are preferably uniformly spaced.
In some embodiments, the material of the body 31 is selected from one or more of polyurethane, silica gel, and polyvinyl chloride. The material of body 31 is selected, is convenient for with gasbag 32 integrated into one piece, reduces the manufacturing cost of gasbag nook closing member 3, strengthens the stability of being connected between gasbag 32 and the body 31. In other embodiments, the body 31 includes nylon filament, and the body 31 is made of nylon filament and one or more of polyurethane, silicone, and polyvinyl chloride. In the embodiment, the body 31 is formed by combining nylon wires with other materials, that is, the nylon wires are added into the body 31, so that the body 31 is prevented from being left in the body after being accidentally broken, the broken part of the body 31 can be conveniently pulled out by using the nylon wires, and the safety of the mother and other fetuses is further protected.
Used nook closing member generally is the metal needle among the prior art, and after the metal needle stretched into the human body, on the one hand because nook closing member size itself is very little, and on the other hand because sheltering from of each position in vivo, supersound positioner hardly carries out accurate location to the syringe needle, needs the doctor to spend a large amount of time to look for the syringe needle position, and this just brings very big trouble for the doctor, has delayed the time of operation.
In the embodiment of the application, a bone material 4 is packaged at the end part of the air bag needle core 3 close to the needle head, and the distance between the bone material 4 and the needle head of the air bag needle core 3 is smaller than that between the air bag 32 and the needle head of the air bag needle core 3. That is, the balloon 32 is spaced from the needle of the body 31 by a distance, and the bone material 4 is encapsulated in the body 31 at the distance. When the material of body is selected from one or more in polyurethane, silica gel, polyvinyl chloride, at its syringe needle tip encapsulation sclerotin material 4, sclerotin material 4 can cooperate with supersound positioner to the position of accurate location syringe needle makes the syringe needle can enter into to pregnant bag accurately, has solved the inaccurate difficult problem in location, has saved the time simultaneously. In the present example, the bone material 4 is selected from potassium and/or calcium salts. Specifically, the dimension of the bone material 4 along the length direction of the air sac needle core 3 is 3 mm-5 mm.
In some embodiments, the material of the guide needle core 2 is selected from one or more of polyurethane, silica gel, and polyvinyl chloride; the end part of the guide needle core 2 close to the needle head is encapsulated with bone material 4. In this application embodiment, set up guide needle core 2 to above-mentioned material, can encapsulate sclerotin material 4 on its syringe needle, sclerotin material 4 can cooperate with supersound positioner to pinpoint the position of syringe needle, make the syringe needle can enter into to pregnant bag accurately. In other embodiments, the introducer needle core 2 comprises nylon filament, and the introducer needle core 2 is made of nylon filament combined with one or more materials selected from polyurethane, silicone, and polyvinyl chloride. In the embodiment, the nylon wire is combined with other materials to form the guide needle core 2, namely the nylon wire is added into the guide needle core 2, so that the guide needle core 2 is prevented from being left in the body after being accidentally broken, the broken part of the guide needle core 2 can be conveniently taken out by using the nylon wire, and the safety of a mother and other fetuses is further protected. In the present embodiment, the bone material 4 is selected from potassium and/or calcium salts. Specifically, the dimension of the bone material 4 along the length direction of the guide needle core 2 is 3 mm-5 mm.
While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the invention as defined in the appended claims. Moreover, the technical solutions in the embodiments of the present invention may be combined with each other, but it is necessary to be able to be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent, and is not within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. A reduced tire puncture needle assembly, characterized in that: the needle sleeve comprises a needle sleeve, a guide needle core and an air bag needle core, wherein the guide needle core is arranged in the needle sleeve in a penetrating manner so as to guide the needle sleeve to enter a pregnant sac; the air bag needle core comprises a body and an air bag arranged at the end part of the body close to the needle head, a cavity extending along the length direction of the body is formed in the body, air holes are formed on the wall of part of the cavity, and the air holes and the air bag are correspondingly arranged to inflate the air bag; the guide needle core is drawn out from the needle sleeve, and the air sac needle core is arranged in the needle sleeve in a penetrating way so as to enable the air sac to enter the pregnant sac; the external pressure of the air bag is 30-90 psi, and the compression function of the air bag after inflation is used for blocking the blood circulation of the cardiovascular system of the fetus;
the material of the body is selected from one or more of polyurethane, silica gel and polyvinyl chloride;
a bone material is packaged at the end part of the air bag needle core close to the needle head, and the distance between the bone material and the needle head of the air bag needle core is smaller than that between the air bag and the needle head of the air bag needle core;
the bone material is selected from potassium salt and/or calcium salt; the size of the bone material along the length direction of the air bag needle core is 3 mm-5 mm.
2. The tire reduction spike assembly of claim 1 wherein the body and the balloon are of an integrally formed construction.
3. The tire reduction puncture needle assembly of claim 1, wherein the balloon is wrapped around the end of the body near the needle; and/or
The thickness of the air bag is 2 mm-5 mm.
4. The tire reduction puncture needle assembly of claim 1, wherein the number of the air holes is plural, and the air holes are arranged in rows at intervals.
5. The tire reduction puncture needle assembly according to any one of claims 1 to 4, wherein the body comprises nylon filaments, and the body is formed by combining the nylon filaments with one or more materials selected from polyurethane, silicone and polyvinyl chloride.
6. The tire reduction puncture needle assembly according to any one of claims 1 to 4, wherein the material of the introducer needle core is selected from one or more of polyurethane, silica gel, and polyvinyl chloride; and a bone material is encapsulated at the end part of the guide needle core close to the needle head.
7. The fetal reduction needle assembly of claim 6 wherein the bone material is selected from potassium and/or calcium salts; and/or the presence of a gas in the gas,
the size of the bone material along the length direction of the guide needle core is 3 mm-5 mm; and/or the presence of a gas in the gas,
the guide needle core comprises nylon yarn, and is formed by combining the nylon yarn with one or more materials of polyurethane, silica gel and polyvinyl chloride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210489203.6A CN114569216B (en) | 2022-05-07 | 2022-05-07 | Puncture needle assembly for reducing tire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210489203.6A CN114569216B (en) | 2022-05-07 | 2022-05-07 | Puncture needle assembly for reducing tire |
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| Publication Number | Publication Date |
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| CN114569216A CN114569216A (en) | 2022-06-03 |
| CN114569216B true CN114569216B (en) | 2023-01-03 |
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| CN202210489203.6A Active CN114569216B (en) | 2022-05-07 | 2022-05-07 | Puncture needle assembly for reducing tire |
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| CN114569216A (en) | 2022-06-03 |
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