CN107596498B - Spiral curled diameter-adjustable transfusion needle - Google Patents
Spiral curled diameter-adjustable transfusion needle Download PDFInfo
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- CN107596498B CN107596498B CN201711024835.0A CN201711024835A CN107596498B CN 107596498 B CN107596498 B CN 107596498B CN 201711024835 A CN201711024835 A CN 201711024835A CN 107596498 B CN107596498 B CN 107596498B
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- 238000001802 infusion Methods 0.000 claims description 42
- 239000007787 solid Substances 0.000 claims description 31
- 239000003638 chemical reducing agent Substances 0.000 claims description 22
- 230000000903 blocking effect Effects 0.000 claims description 8
- 238000003780 insertion Methods 0.000 abstract description 18
- 230000037431 insertion Effects 0.000 abstract description 18
- 208000002193 Pain Diseases 0.000 abstract description 10
- 238000004804 winding Methods 0.000 abstract description 7
- 239000007788 liquid Substances 0.000 description 8
- 210000004204 blood vessel Anatomy 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 239000008280 blood Substances 0.000 description 3
- 210000004369 blood Anatomy 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000001990 intravenous administration Methods 0.000 description 2
- 238000010253 intravenous injection Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 210000004761 scalp Anatomy 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 208000032912 Local swelling Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000007920 subcutaneous administration Methods 0.000 description 1
- 210000004003 subcutaneous fat Anatomy 0.000 description 1
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses a spiral-wound adjustable diameter transfusion needle, which solves the problems that in the prior art, a transfusion needle cannot be effectively inserted, and unnecessary damage is easily caused to patients, can realize the size change of the transfusion needle, and can reduce the size of the needle before needle insertion by adjusting the spiral winding degree of the needle, thereby facilitating needle insertion and relieving pain of needle insertion, and can enlarge the size of the needle after needle insertion by adjusting the spiral winding degree of the needle again, and the technical scheme is as follows: the needle comprises a needle seat and a needle head with one end fixed on the needle seat, wherein the cross section of the needle head is spiral, the longitudinal section of the needle head is laminated, a limiting part is arranged at the matching position of the needle seat and the outermost layer of the needle head, the limiting part props against the outermost layer of the needle head to enable the needle head to be adjacently laminated tightly so as to be in a small-diameter state, and the limiting part drives the outermost layer of the needle head to be outwards expanded to enable the adjacent layer of the needle head to generate gaps so as to be in a large-diameter state.
Description
Technical Field
The invention relates to the technical field of medical appliances, in particular to a spiral curled type variable-diameter infusion needle.
Background
Intravenous infusion is a method of delivering large amounts of sterile liquids, electrolytes, and drugs intravenously into the body using the principles of atmospheric pressure and hydrostatic pressure. At present, intravenous transfusion is carried out to human bodies through a transfusion tube and a transfusion needle, the diameter of the transfusion needle for adults is generally 0.6-0.8 mm, and the diameter of the transfusion needle for children is generally about 0.5 mm. When intravenous injection is carried out, the infusion needle is required to pierce the back of the hand of a human body and other parts, but some patients have very thin blood vessels, the blood vessels cannot be quickly and accurately pierced when the infusion needle is inserted, and the current infusion needle has strong stinging feeling to the patients; especially for the pediatric patient, subcutaneous fat is relatively thick, a blood vessel at the back of the hand is not easy to see clearly, the limbs are short, the puncture part is close to joints and is not easy to fix, puncture is very easy to cause leakage, unnecessary pain is caused to the child, therefore, the pediatric patient is infused by scalp intravenous injection, but the blood vessel at the pediatric scalp part is extremely fine, the needle can not be quickly and accurately inserted by the conventional pediatric infusion needle, the skin of the child is tender, and local swelling or subcutaneous blood stasis caused by the needle penetrating through a blood vessel is easy to occur.
In summary, for pediatric patients or adult patients with finer blood vessels, the infusion needle in the prior art cannot be effectively inserted into the patient, and thus the patient is easy to be injured unnecessarily, and an effective solution is not yet available.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides the spiral-wound variable-diameter infusion needle, which can realize the dimensional change of an infusion needle, and the size of the needle can be reduced by adjusting the spiral winding degree of the needle before needle insertion, so that the needle insertion is convenient, the pain of the needle insertion is relieved, and the spiral winding degree of the needle is adjusted again after the needle insertion, so that the size of the needle is enlarged, and normal infusion is realized;
further, the invention adopts the following technical scheme:
the utility model provides a spiral curly adjustable reducing transfusion needle, includes needle file and one end is fixed in the syringe needle of needle file, the transversal heliciform that personally submits of syringe needle, the longitudinal section of syringe needle is the range upon range of form, needle file and the outermost cooperation department of syringe needle set up spacing part, spacing part top tightly syringe needle outermost make the adjacent range upon range of syringe needle tightly and then be in little pipe diameter state, spacing part drives the outside expansion of syringe needle outermost and makes the adjacent layer of syringe needle produce the clearance and then be in big pipe diameter state.
According to the infusion needle, the needle head is arranged in a spiral curled shape, and the limiting part is arranged, so that before needle insertion, the limiting part is propped against the outermost layer of the needle head, the needle head is adjacently laminated tightly, the outer diameter and the pipe diameter of the needle head are small, the needle can be inserted rapidly and accurately, and the pain of needle insertion is greatly relieved; after the needle is inserted, the limiting component drives the outermost layer to expand, the inner side of the needle head expands by virtue of elasticity to enable gaps to be generated between adjacent layers of the needle head, the outer diameter and the pipe diameter of the needle head become larger, and transfusion is carried out at a normal transfusion speed.
Further, the needle seat is fixedly connected with the innermost layer of the needle head. The innermost layer of the needle head is fixed with the needle seat, the outermost layer of the needle head is connected with the limiting component, and reliable matching connection of the needle head and the needle seat can be realized through the matching of the innermost layer of the needle head and the limiting component.
Further, the innermost layer of the needle head is fixedly connected with a solid column arranged along the radial direction of the needle head, and the end part of the solid column is fixed inside the needle seat. The solid column is arranged at the innermost layer of the needle head, the end part of the solid column is fixed with the needle seat, the fixation is firmer, the impact force of the needle head is large, and the needle is easier to enter.
Further, the cross section of the solid column is in a sector shape.
Further, the arc-shaped surface of the solid column is connected with the innermost layer of the needle head into a whole.
The cross section of the solid column is set to be fan-shaped, the arc-shaped part of the solid column is connected with the innermost layer of the needle head, and the triangular part is supported between the adjacent layers, so that the solid column and the needle head are not only ensured to be fixed and reliable, but also the inner layer of the needle head can be kept to have a certain gap for evacuating bubbles in the infusion apparatus and initially feeding back blood after the needle head is used for infusion.
Further, the other end of the needle is provided with a needle tip.
Furthermore, the needle seat is provided with a clamping part at one end close to the needle point of the needle head, and the clamping part is sleeved outside the needle head.
Further, the clamping part comprises a sleeve, the end part of the sleeve is rotatably connected with the needle seat, and a set gap is arranged between the sleeve and the needle head.
Further, the sleeve inner diameter is the same as the outer diameter of the needle expanded to maximum.
Further, a plugging strip is arranged on the inner wall of the sleeve corresponding to the gap of the outermost layer of the needle head.
The end part of the needle seat is provided with a sleeve which is rotatably connected with the needle seat, the needle head is further arranged in a closed environment, a gap possibly generated by the outermost layer of the needle head can be blocked through the arrangement of the blocking strip, liquid cannot flow outwards, and if the outermost layer of the needle head is subjected to position change in the expanding process, the sleeve can be further rotated, so that the blocking strip is aligned to the gap of the outermost layer; in practical implementation, the gap of the outermost layer of the needle head is arranged below, and the sleeve matched with the gap of the outermost layer of the needle head is contacted with the skin of a human body after the needle is inserted.
Further, the sleeve is provided with a reducer pipe at one end close to the needle point of the needle head, and the outer diameter of the reducer pipe is gradually reduced from the joint of the reducer pipe and the sleeve to the direction of the needle point of the needle head. The end of the sleeve is provided with a reducer, the direction of the radial needle tip outside the reducer is gradually reduced, the needle insertion position of the infusion needle is blocked, and the condition of liquid leakage of the needle is further avoided.
Further, the limiting component comprises a rod body which penetrates through the inner wall of the needle seat and is fixedly connected with the outermost layer of the needle head, and the outer end of the rod body extends to the outer portion of the needle seat and is connected with the handle. The handle is operated to drive the rod body to move so as to push against the outermost layer of the needle head or drive the outermost layer of the needle head to expand.
In order to overcome the defects in the background technology, the invention also provides another spiral winding type variable-diameter infusion needle, which comprises a needle seat and a needle head with one end fixed on the needle seat, wherein the other end of the needle head is provided with a needle point, the cross section of the needle head is spiral, and the longitudinal section of the needle head is laminated; the needle seat is provided with a sleeve at one end close to the needle point of the needle, the sleeve is sleeved outside the needle, and the end part of the sleeve is rotatably connected with the needle seat; the sleeve is fixedly connected with the outermost layer of the needle head, the needle seat is fixedly connected with the innermost layer of the needle head, and the needle head can be adjacently stacked and tightly positioned in a small-diameter state or a gap is generated between adjacent layers of the needle head and positioned in a large-diameter state by rotating the sleeve and the needle seat.
Further, a plugging strip is arranged on the inner wall of the sleeve corresponding to the gap of the outermost layer of the needle head.
Further, the sleeve is provided with a reducer pipe at one end close to the needle point of the needle head, and the outer diameter of the reducer pipe is gradually reduced from the joint of the reducer pipe and the sleeve to the direction of the needle point of the needle head. The end of the sleeve is provided with a reducer, the direction of the radial needle tip outside the reducer is gradually reduced, the needle insertion position of the infusion needle is blocked, and the condition of liquid leakage of the needle is further avoided.
Compared with the prior art, the invention has the beneficial effects that:
according to the infusion needle, the needle head is arranged in a spiral curled shape, and the limiting part is arranged, so that before needle insertion, the limiting part is propped against the outermost layer of the needle head, the needle head is adjacently laminated tightly, the outer diameter and the pipe diameter of the needle head are small, the needle can be inserted rapidly and accurately, and the pain of needle insertion is relieved; after the needle is inserted, the limiting component drives the outermost layer to expand, a gap is formed between adjacent layers of the needle head, the outer diameter and the pipe diameter of the needle head become larger, and transfusion is carried out at a normal transfusion speed.
According to the infusion needle, the innermost layer of the needle head is fixed with the needle seat, and the solid column is arranged at the same time, so that the end part of the solid column is fixed with the needle seat, the needle head is fixed more firmly, the impact force of the needle head is high, and the needle is easier to insert.
According to the infusion needle, the clamping part in the form of the sleeve is arranged, the blocking part is provided with the blocking strip corresponding to the gap possibly generated by the outermost layer of the needle, so that the gap possibly generated by the outermost layer of the needle can be blocked, liquid cannot outflow, bacteria are prevented from entering, and if the position of the outermost layer of the needle changes in the expanding process, the sleeve can be further rotated to enable the blocking strip to be aligned to the gap of the outermost layer.
According to the infusion needle, the needle head is arranged in a spiral curled shape, and through the arrangement of the sleeve and the needle seat, the sleeve and the needle seat are rotated at the same time, so that the needle head can be driven to further curl to enable adjacent layers to be tightly stacked, the outer diameter and the pipe diameter of the needle head are small, the needle can be rapidly and accurately inserted, and the pain caused by needle insertion is relieved; simultaneously, the sleeve and the needle seat are rotated in the opposite direction, so that each layer of the needle head can be driven to expand outwards, gaps are further generated between adjacent layers of the needle head, the outer diameter and the pipe diameter of the needle head are increased, and the infusion is carried out at the normal infusion speed.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application.
FIG. 1 is a schematic view of the structure of an infusion needle of the present invention;
FIG. 2 is a cross-sectional view of the infusion needle of the present invention in an open state;
FIG. 3 is a schematic illustration of the mating of an infusion needle with a solid post in accordance with the present invention;
FIG. 4 is a schematic view showing the cooperation between the infusion needle and the locking part of the invention;
FIG. 5 is a schematic view of an infusion needle according to another embodiment of the invention;
in the figure, a needle seat 1, a needle head 2, a solid column 3, a needle point 4, a rod body 5, a handle 6, a sleeve 7, a plugging strip 8 and a reducer 9 are arranged.
Detailed Description
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
As introduced by the background art, the problem that the infusion needle cannot be effectively inserted in the prior art and unnecessary damage is easily caused to patients is solved, and the application provides the spiral curled variable-diameter infusion needle.
In a typical implementation manner of the application, as shown in fig. 1-4, a spiral winding type variable diameter infusion needle is provided, which comprises a needle seat 1 and a needle head 2 with one end fixed on the needle seat 1, wherein the cross section of the needle head 2 is spiral, the longitudinal section of the needle head 2 is laminated, a limit part is arranged at the matching position of the needle seat 1 and the outermost layer of the needle head 2, the limit part tightly pushes the outermost layer of the needle head 2 to enable the needle head 2 to be adjacently laminated so as to be in a small-caliber state, and the limit part drives the outermost layer of the needle head 2 to be outwardly expanded so as to enable the adjacent layer of the needle head 2 to generate gaps so as to be in a large-caliber state. According to the infusion needle, the needle head is arranged in a spiral curled shape, and the limiting part is arranged, so that before needle insertion, the limiting part is propped against the outermost layer of the needle head, the needle head is adjacently laminated tightly, the outer diameter and the pipe diameter of the needle head are small, the needle can be inserted rapidly and accurately, and the pain of needle insertion is relieved; after the needle is inserted, the limiting component drives the outermost layer to expand, a gap is formed between adjacent layers of the needle head, the outer diameter and the pipe diameter of the needle head become larger, and transfusion is carried out at a normal transfusion speed.
The limiting component comprises a rod body 5 which penetrates through the inner wall of the needle seat 1 and is fixedly connected with the outermost layer of the needle head 2, and the outer end of the rod body 5 extends to the outside of the needle seat 1 and is connected with a handle 6. The handle is operated to drive the rod body to move so as to push against the outermost layer of the needle head or drive the outermost layer of the needle head to expand.
The needle head can be made of three curled layers with a sheet structure of 0.03-0.05 mm, and also can be curled into two layers, one layer or four layers or the like, the needle head is adjacently laminated tightly in an initial state, the needle head is tightly propped by the limiting part, the outer diameter size of the needle head is only 0.18-0.3 mm, the outer diameter of the needle head is greatly reduced, the needle is easy to puncture, and the pain feeling of the needle is relieved; after the needle is inserted, the needle head can be driven to expand outwards through the limiting component according to the requirement of transfusion, each layer of the needle head expands outwards under the self elasticity and the power of the limiting component, a gap is formed between adjacent layers of the needle head, the space for liquid to flow in the needle head is increased, and the needle head can complete normal transfusion.
The needle head of the invention is close to a solid body, has stronger anti-impact reaction force, and is not easy to bend even though the needle head is thinner.
The needle seat 1 is fixedly connected with the innermost layer of the needle head 2. The innermost layer of the needle head is fixed with the needle seat, the outermost layer of the needle head is connected with the limiting component, and reliable matching connection of the needle head and the needle seat can be realized through the matching of the innermost layer of the needle head and the limiting component.
The innermost layer of the needle head 2 is fixedly connected with a solid column 3 which is arranged along the radial direction of the needle head, and the end part of the solid column is fixed inside the needle seat. The solid column is arranged at the innermost layer of the needle head, the end part of the solid column is fixed with the needle seat, the fixation is firmer, the impact force of the needle head is large, and the needle is easier to enter.
The cross section is defined herein as the cross section perpendicular to the axial direction of the needle and the longitudinal cross section is defined as the cross section parallel to the axial direction of the needle.
The solid column 3 has a sector-shaped cross section. The arc surface of the solid column 3 is connected with the innermost layer of the needle head 2 into a whole, the arc surface part of the solid column 3 is arranged opposite to the tip of the needle head 2, the triangular parts are arranged in opposite directions, and the solid column can provide supporting force when the tip of the needle head pierces the skin, so that the impact force of the needle head is increased. The cross section of the solid column is set to be fan-shaped, the arc-shaped part of the solid column is connected with the innermost layer of the needle head, and the triangular part is supported between the adjacent layers, so that the solid column and the needle head are not only ensured to be fixed and reliable, but also the inner layer of the needle head can be kept to have a certain gap for evacuating bubbles in the infusion apparatus and initially feeding back blood after the needle head is used for infusion.
The other end of the needle 2 is provided with a needle tip 4. The needle seat 1 is provided with a clamping part at one end close to the needle point 4 of the needle head 2, and the clamping part is sleeved outside the needle head 2. The clamping part comprises a sleeve 7, the end part of the sleeve 7 is rotatably connected with the needle seat 1, a set gap is arranged between the sleeve 7 and the needle head 2, and the sleeve and the needle seat can be connected through threads.
The sleeve 7 has the same inside diameter as the outer diameter of the needle 2 expanded to its maximum. The inner wall of the sleeve 7 is provided with a plugging strip 8 corresponding to the gap of the outermost layer of the needle head 2. The needle seat end is provided with the sleeve which is rotatably connected with the needle seat end, the needle is further arranged in a closed environment, a gap possibly generated by the outermost layer of the needle can be blocked through the arrangement of the blocking strip, liquid cannot flow outwards, and if the outermost layer of the needle is subjected to position change in the expanding process, the sleeve can be further rotated, and then the blocking strip is aligned to the gap of the outermost layer.
The sleeve 7 is provided with a reducer pipe 9 at one end close to the needle point 4 of the needle 2, and the outer diameter of the reducer pipe 9 gradually decreases from the joint with the sleeve 7 to the direction of the needle point 4 of the needle 2. The longitudinal section of the reducer pipe can be an arc pipe, the reducer pipe is arranged at the end part of the sleeve, the radial needlepoint direction outside the reducer pipe is gradually reduced, the needle insertion part of the infusion needle is plugged, and the condition of liquid leakage of the needle is further avoided.
In another exemplary embodiment of the present application, as shown in fig. 5, there is provided a spiral winding type variable diameter infusion needle, which comprises a needle seat 1 and a needle head 2 with one end fixed on the needle seat 1, wherein the other end of the needle head 2 is provided with a needle tip 4, the cross section of the needle head 2 is spiral, and the longitudinal section of the needle head 2 is laminated; the needle seat 1 is provided with a sleeve 7 at one end close to the needle point 4 of the needle head 2, the sleeve 7 is sleeved outside the needle head 2, the end part of the sleeve 7 is rotatably connected with the needle seat 1, and the sleeve 7 and the needle seat 1 can realize the rotation of the sleeve 7 and the needle seat 1 through threaded connection; the sleeve 7 is fixedly connected with the outermost layer of the needle head 2, the needle seat 1 is fixedly connected with the innermost layer of the needle head 2, and the needle head 2 can be adjacently laminated tightly to be in a small-caliber state or the adjacent layers of the needle head 2 generate gaps to be in a large-caliber state by rotating the sleeve 7 and the needle seat 1. When in use, the sleeve and the needle seat are simultaneously rotated, so that the needle is driven to be further curled to enable adjacent layers to be tightly stacked, the outer diameter and the pipe diameter of the needle are smaller, the needle can be rapidly and accurately inserted, and the pain of inserting the needle is relieved; simultaneously, the sleeve and the needle seat are rotated in the opposite direction, so that each layer of the needle head can be driven to expand outwards, gaps are further generated between adjacent layers of the needle head, the outer diameter and the pipe diameter of the needle head are increased, and the infusion is carried out at the normal infusion speed.
Other arrangements of the needle and the hub in this embodiment are the same as those of embodiment 1.
The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims (8)
1. The spiral curled type variable diameter transfusion needle is characterized by comprising a needle seat and a needle head with one end fixed on the needle seat, wherein the cross section of the needle head is spiral, the longitudinal section of the needle head is laminated, a limit part is arranged at the joint of the needle seat and the outermost layer of the needle head, the limit part pushes against the outermost layer of the needle head to enable the needle head to be adjacently laminated and further be in a small-diameter state, and the limit part drives the outermost layer of the needle head to be outwards expanded to enable the adjacent layer of the needle head to generate a gap and further be in a large-diameter state;
the needle seat is fixedly connected with the innermost layer of the needle head;
the other end of the needle head is provided with a needle point; the needle seat is provided with a clamping part at one end close to the needle point of the needle head, and the clamping part is sleeved outside the needle head;
the innermost layer of the needle head is fixedly connected with a solid column arranged along the radial direction of the needle head, and the end part of the solid column is fixed inside the needle seat.
2. The infusion needle of claim 1, wherein the detent comprises a sleeve having an end rotatably coupled to the hub with a set clearance therebetween.
3. The infusion needle of claim 2, wherein the cannula has an inner diameter that is the same as the outer diameter of the needle that expands to its maximum.
4. The transfusion needle as set forth in claim 2, wherein a blocking strip is provided on the inner wall of the sleeve corresponding to the gap of the outermost layer of the needle head;
the sleeve is provided with a reducer pipe at one end close to the needle point of the needle head, and the outer diameter of the reducer pipe is gradually reduced from the joint of the reducer pipe and the sleeve to the direction of the needle point of the needle head.
5. The infusion needle of claim 1, wherein the limiting member comprises a rod fixedly connected to the outermost layer of the needle through the inner wall of the hub, and wherein the outer end of the rod extends to the outside of the hub to connect with the handle.
6. The spiral curled type variable diameter transfusion needle is characterized by comprising a needle seat and a needle head with one end fixed on the needle seat, wherein the other end of the needle head is provided with a needle point, the cross section of the needle head is spiral, and the longitudinal section of the needle head is laminated; the needle seat is provided with a sleeve at one end close to the needle point of the needle, the sleeve is sleeved outside the needle, and the end part of the sleeve is rotatably connected with the needle seat; the sleeve is fixedly connected with the outermost layer of the needle head, the needle seat is fixedly connected with the innermost layer of the needle head, and the needle head can be adjacently stacked and tightly positioned in a small-caliber state or a gap is generated between adjacent layers of the needle head and positioned in a large-caliber state by rotating the sleeve and the needle seat;
the innermost layer of the needle head is fixedly connected with a solid column arranged along the radial direction of the needle head, and the end part of the solid column is fixed in the needle seat;
a plugging strip is arranged on the inner wall of the sleeve corresponding to the gap of the outermost layer of the needle head;
the sleeve is provided with a reducer pipe at one end close to the needle point of the needle head, and the outer diameter of the reducer pipe is gradually reduced from the joint of the reducer pipe and the sleeve to the direction of the needle point of the needle head.
7. The infusion needle of claim 1 or 6, wherein the solid post has a scalloped cross-section.
8. The infusion needle of claim 7, wherein the arcuate surface of the solid post is integrally connected to the innermost layer of the needle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711024835.0A CN107596498B (en) | 2017-10-27 | 2017-10-27 | Spiral curled diameter-adjustable transfusion needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711024835.0A CN107596498B (en) | 2017-10-27 | 2017-10-27 | Spiral curled diameter-adjustable transfusion needle |
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| Publication Number | Publication Date |
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| CN107596498A CN107596498A (en) | 2018-01-19 |
| CN107596498B true CN107596498B (en) | 2023-05-09 |
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| CN201711024835.0A Active CN107596498B (en) | 2017-10-27 | 2017-10-27 | Spiral curled diameter-adjustable transfusion needle |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2049925U (en) * | 1989-03-28 | 1989-12-27 | 霍岳航 | Medical biopsy sampling needle |
| US6589213B2 (en) * | 1997-12-12 | 2003-07-08 | Wilson-Cook Medical Incorporated | Body canal intrusion instrumentation having bi-directional coefficient of surface friction with body tissue |
| US20080108950A1 (en) * | 2006-11-03 | 2008-05-08 | Rioux Robert F | Corkscrew helical inserter port |
| CN101810897B (en) * | 2010-05-06 | 2011-12-28 | 吉林大学 | Injection needle with spiral surface |
| US10595760B2 (en) * | 2015-05-05 | 2020-03-24 | University Of Massachusetts | Compliant syringe system, a method of making, and of using the same |
| CN208511636U (en) * | 2017-10-27 | 2019-02-19 | 李建华 | A kind of helical coil musical form adjustable reducing transfusion needle |
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