CN113827235B - Puncture-proof blood drawing needle - Google Patents
Puncture-proof blood drawing needle Download PDFInfo
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- CN113827235B CN113827235B CN202111198253.0A CN202111198253A CN113827235B CN 113827235 B CN113827235 B CN 113827235B CN 202111198253 A CN202111198253 A CN 202111198253A CN 113827235 B CN113827235 B CN 113827235B
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- needle
- puncture
- adhesive sheet
- adhesive
- communication
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- 239000008280 blood Substances 0.000 title claims abstract description 60
- 210000004369 blood Anatomy 0.000 title claims abstract description 59
- 239000000853 adhesive Substances 0.000 claims abstract description 72
- 230000001070 adhesive effect Effects 0.000 claims abstract description 72
- 238000004891 communication Methods 0.000 claims abstract description 57
- 238000007789 sealing Methods 0.000 claims abstract description 25
- 230000036770 blood supply Effects 0.000 claims abstract description 22
- 230000006835 compression Effects 0.000 claims description 25
- 238000007906 compression Methods 0.000 claims description 25
- 230000001681 protective effect Effects 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 3
- 239000002313 adhesive film Substances 0.000 claims 6
- 238000000926 separation method Methods 0.000 claims 2
- 210000003811 finger Anatomy 0.000 description 9
- 230000006872 improvement Effects 0.000 description 7
- 238000010241 blood sampling Methods 0.000 description 5
- 210000004204 blood vessel Anatomy 0.000 description 5
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 239000002360 explosive Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 230000000740 bleeding effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 210000003813 thumb Anatomy 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 210000004247 hand Anatomy 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150381—Design of piercing elements
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150969—Low-profile devices which resemble patches or plasters, e.g. also allowing collection of blood samples for testing
Abstract
The invention relates to a puncture-proof blood drawing needle, which belongs to the technical field of medical appliances and comprises a blood drawing end and a blood supply end, wherein an adhesive sheet is arranged on a puncture needle handle, an adhesive is arranged on two sides of the adhesive sheet, the length of the adhesive sheet is larger than that of the puncture needle handle, part of the length of one surface of the adhesive sheet is adhered and fixed with the puncture needle handle, the rest part is in a free state, the other surface of the adhesive sheet is folded in half for adhering and fixing, the blood supply end is further provided with a sealing cap and an outer cover, the sealing cap is sleeved on the whole length of a communication needle, the outer cover comprises an outer cylinder and a cylinder cap, and the outer cylinder is sleeved outside the communication needle and the communication needle handle. The invention creatively combines the adhesive sheet, the outer cover and the sealing cap, solves the problems of low blood drawing efficiency and poor safety in the prior art, and improves the efficiency and safety of blood drawing operation.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a puncture-preventing blood drawing needle which is safe and reliable in blood drawing and high in operation efficiency.
Background
An explosive severe wounded requires a blood drawing test to detect his life symptoms. Since it is often the case that there is a large amount of bleeding, there is a need to increase the blood drawing efficiency to save lives.
The blood drawing needle generally comprises a blood drawing end and a blood supply end, wherein the blood drawing end is used for puncturing a human blood vessel to introduce blood into the blood drawing needle, then the blood drawing end enters the blood supply end, the blood supply end is used for introducing the blood into a vacuum tube, and the blood drawing needle is taken out after the vacuum tube reaches a certain amount, so that the blood drawing is realized. When the blood drawing end punctures the blood vessel of the human body, the blood drawing end needs to be fixed, an adhesive tape is usually prepared in advance in the prior art, and the blood drawing end is fixed after the puncture is completed. Because the operation is completed by the same person, one hand of the operation stabilizes the patient, the other hand of the operation punctures, the hand is loosened to tear the adhesive tape after the puncture is completed by the other hand of the operation, and the puncture needle is necessarily displaced to a certain extent, so that the blood drawing end is withdrawn from the blood vessel to be unable to draw blood, or the blood vessel is punctured to cause bleeding and other conditions to occur. Meanwhile, the soft rubber sleeve is arranged outside the blood supply end of the existing blood drawing needle, the needle body of the blood supply end can be pierced from any position of the soft rubber sleeve, and when the vacuum tube is pierced, if the blood supply end is slightly inclined, the blood supply end can slide out of the soft rubber sleeve to stab hands, so that the safety problem is caused.
To solve the above problems, it is necessary to design a blood drawing needle which can be quickly fixed on the skin of a patient, thereby improving the operation efficiency, having important help to improve the treatment efficiency of explosive severe wounded, and simultaneously, preventing the hand from being pricked out of the soft rubber sleeve to hurt by deflection, thereby improving the safety, being beneficial to saving time for medical staff, and further improving the blood drawing efficiency and the treatment efficiency.
Disclosure of Invention
Accordingly, the present invention is directed to a blood drawing needle for preventing puncture, which solves the problems of low blood drawing efficiency and poor safety in the prior art.
The invention is realized by the following technical scheme:
the utility model provides a prevent stabbing blood drawing needle, includes blood drawing end and blood supply end, blood drawing end is provided with pjncture needle and pjncture needle handle, blood supply end is provided with communication needle and intercommunication needle handle, be provided with the bonding piece on the pjncture needle handle, the two-sided binder that is provided with of bonding piece, just the length of bonding piece is greater than the length of pjncture needle handle, and the part length of its one side is fixed with the pjncture needle handle bonding, and the remaining part is the free state, the another side of bonding piece is fixed at the bonding along the boundary line fifty percent discount of bonding part and free part, blood supply end still is provided with closure cover and dustcoat, the closure cover cup joints on the full length of communication needle, the closure cover includes soft section and a stereoplasm section at least, the stereoplasm section sets up in the communication needle point region, and the clearance fit of communication needle is 0.05-0.2mm with the communication needle, the dustcoat includes urceolus cup joint in the outside of communication needle and communication needle handle, and the one end setting of urceolus is at the distal end of communication needle handle, extends to set up at the distal end that the bonding of communication needle, extends at the boundary line doubling up between the bonding part and free part, the compression end is located the compression end of seal end of urceolus and the seal end that the seal end is linked together with the urceolus, and the seal end is located the compression end, and the seal end is linked up.
Further, the length of the adhesive sheet is twice that of the puncture needle handle, one half of the length of one surface of the adhesive sheet is fixedly bonded with the puncture needle handle, the other half of the adhesive sheet is in a free state, and the other surface of the adhesive sheet is fixedly folded along the middle line of the adhesive sheet in a doubling mode.
Further, the adhesive sheet is provided with a release film along one side of the middle line thereof, and the release film separates the partial areas of the adhesive sheet itself from each other.
Further, a portion of the adhesive sheet in a free state is provided with a protective film.
Further, a first positioning nail is arranged on the side wall of the outer barrel, and a positioning nail hole for limiting and fixing the positioning nail is arranged on the communicating needle handle.
Further, a second positioning nail is further arranged on the side wall of the outer barrel, and the second positioning nail is arranged in a region close to the needle point of the communication needle.
Further, the nail income end of first locating nail and second locating nail is provided with locking structure, locking structure includes left slide hole and the right slide hole that is the symmetry setting at the nail income end, left slide hole is provided with left slider and left connecting rod, right slide hole is provided with right slider and right connecting rod, left connecting rod sets up between left slider and left slide hole end, right connecting rod sets up between right slider and right slide hole end, all is provided with the elastic component between left slider and left slide hole and between right slider and right slide hole, all is provided with the connecting rod sliding chamber in left slider and right slide hole, the connecting rod sliding intracavity is provided with the step hole that prevents the connecting rod roll-off, left connecting rod and right connecting rod all are provided with the anticreep handle that the diameter is greater than the step hole.
Further, the front ends of the left slider and the right slider are arranged to be conical, and the conical tips are rounded.
Further, a guide sleeve and a limiting taper sleeve are arranged in the outer cylinder.
Further, the soft section is made of rubber materials, and the hard section is made of hard plastic materials.
The invention has the beneficial effects that:
the adhesive patch is characterized in that the adhesive is arranged on two sides, the protective film is opened when the adhesive patch is used, the thumb and the index finger are fixed at the front end and the rear end of the puncture needle handle, the middle finger is abutted against the adhesive patch and forms adhesion, after puncture is finished, the middle finger extends outwards, so that the adhesive patch is driven to be opened, the puncture needle is directly stuck and fixed on the skin of a human body, and the other side of the adhesive patch is provided with the isolating film, so that the adhesion force of the adhesive patch is smaller than the adhesion force of the adhesive patch and the middle finger through calculation, and the aim is fulfilled; meanwhile, the communication needle is sealed by arranging the outer cover, and the sealing cover is opened only when the communication needle is used, so that the harm to human bodies when the communication needle is not used can be avoided; in addition, the invention is sleeved in the full length range of the communicating needle through the sealing cover, and the sealing cover is a hard section at the needle point area, so that the hard section can not deform, and the gap between the hard section and the communicating needle is small, thereby realizing the guiding function, ensuring that the communicating needle can not slide out from the side surface of the spring in a deflection way when the sealing cover moves, and the soft section has better elasticity, can be compressed to puncture the communicating vacuum tube, and can also elastically recover to naturally stretch out to wrap the communicating needle after use, thereby preventing the medical staff from being stabbed.
In a word, the invention creatively combines the adhesive sheet, the outer cover and the sealing cap with the soft section and the hard section, solves the problems of low blood drawing efficiency and poor safety in the prior art, improves the efficiency and safety of blood drawing operation, and provides assistance for improving the treatment efficiency of explosive severe wounded.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objects and other advantages of the invention may be realized and obtained by means of the instrumentalities and combinations particularly pointed out in the specification.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is a schematic view of the invention after the cartridge cap is opened;
FIG. 4 is a dynamic view of FIG. 3 after the first tack is opened;
FIG. 5 is a schematic view of FIG. 3 after the first tack is opened;
FIG. 6 is a schematic view of FIG. 5 after insertion of a second dowel;
FIG. 7 is a schematic view of the structure of the needle handle;
FIG. 8 is a schematic view of the protective film of FIG. 7 after being torn open;
FIG. 9 is a schematic view of the adhesive wafer of FIG. 8 after opening;
FIG. 10 is a schematic view of FIG. 9 with the release film removed;
FIG. 11 is a schematic view of the structure of the first positioning pin;
FIG. 12 is a schematic view of the structure with the locking mechanism removed;
FIG. 13 is a schematic diagram showing the connection of a slider to a connecting rod
Fig. 14 is a schematic structural view of the connecting needle.
In the figure:
1-a blood drawing end; 2-blood supply end; 3-a pipeline; 4-puncture needle; 5-a puncture needle handle; 6-needle cap; 7-connecting needles; 8-connecting a needle handle; 9-an adhesive sheet; 10-a binder; 11-closing the cap; 12-an outer cover; 13-an outer cylinder; 14-a barrel cap; 15-compressing a spring; 16-a first positioning pin; 17-positioning the nail holes; 18-a second dowel; 19-a separator; 20-a protective film; 21-left slide hole; 22-right slide hole; 23-left slider; 24-left connecting rod; 25-right slide block; 26-right connecting rod; 27-a spring; 28-connecting rod sliding cavity; 29-step holes; 30-an anti-drop handle; 31-a puncture resistant layer; 32-a guide sleeve; 33-limiting taper sleeve; 34-a soft segment; 35-hard segment.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the foregoing description of the invention, it should be noted that the azimuth or positional relationship indicated by the terms "one side", "the other side", etc. are based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship in which the inventive product is conventionally put in use, are merely for convenience of describing the invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and therefore should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Furthermore, the terms "identical" and the like do not denote that the components are identical, but rather that there may be minor differences. The term "perpendicular" merely means that the positional relationship between the components is more perpendicular than "parallel" and does not mean that the structure must be perfectly perpendicular, but may be slightly tilted.
As shown in fig. 1-2, the present invention provides a technical solution: prevent stabbing blood drawing needle, including blood drawing end 1 and blood supply end 2, blood drawing end and blood supply end pass through pipeline 3 intercommunication, and blood drawing end is provided with pjncture needle 4 and pjncture needle handle 5, and the pjncture needle outside is provided with needle cap 6, and the pjncture needle is used for pierceing human blood vessel, introduces the pjncture needle with blood, and the pjncture needle handle is used for holding the pjncture needle, convenient operation, and blood supply end is provided with communicating needle 7 and communicating needle handle 8, and the communicating needle is used for communicating the pjncture needle with the vacuum tube, introduces the vacuum tube with blood to realize drawing blood.
One particular aspect of this embodiment is that: as shown in fig. 7-10, an adhesive sheet 9 is provided on the puncture needle handle, an adhesive 10 is provided on both sides of the adhesive sheet, the length of the adhesive sheet is longer than that of the puncture needle handle, a part of the length of one side of the adhesive sheet is adhered and fixed with the puncture needle handle, the rest part is in a free state, and the other side of the adhesive sheet is folded and fixed along the boundary line between the adhered part and the free part, so that the adhesive sheet does not protrude from the puncture needle handle, namely, the size of the original needle handle is maintained. Because the adhesive sheet is provided with the adhesive on both sides, the adhesive sheet can be fixed on the needle handle on one hand and can be adhered on the skin of a human body on the other hand, and meanwhile, the adhesion Liu Ke of the free part has the traction effect, so that the possibility of realizing quick fixation is provided.
The particular second of this embodiment is: as shown in fig. 5-6, the blood supply end is further provided with a sealing cap 11, the sealing cap is sleeved on the whole length of the communicating needle, the sealing cap at least comprises a soft section 34 and a hard section 35, the hard section is arranged on the needle point area, the soft section is made of rubber materials, has certain deformability and can be compressed and deformed to perform puncture operation, and the hard section is made of hard plastic materials, has certain hardness and is not easy to be penetrated by the needle point, so that the medical staff can be prevented from being punctured when the medical staff touch the blood supply end carelessly.
A more preferred embodiment includes two soft segments and a hard segment, as shown in fig. 14, with the hard segment being disposed in the region of the needle tip and the soft segments being disposed at the front and rear ends of the hard segment, the front end being adapted for piercing of the needle tip and the rear end being adapted for deformation of the closure cap.
In order to improve the safety, the hard section and the communicating needle can be set to be in transition fit, but because the transition fit clearance is too small, when manufacturing errors or tiny dirt exist, the trafficability is possibly influenced, and the use is influenced, so the inventor carries out theoretical calculation and considers that the optimal clearance between the hard section and the communicating needle is 0.05-0.2mm through repeated experiments, and at the moment, the communicating needle has good trafficability, better guidance and very low incidence rate of skew.
Although the above solution can prevent the puncture needle from puncturing the human body from the side, if the puncture needle is directly used in the medical care site, the puncture needle can be touched when carelessly, and the puncture needle stretches out from the center of the sealing cap to cause injury to medical staff, so as to supplement the above solution, the present inventors propose the following further improvement solutions:
as shown in fig. 2-6, the blood supply end is further provided with an outer cover 12, the outer cover comprises an outer cylinder 13 and a cylinder cap 14, the outer cylinder is sleeved outside the communication needle and the communication needle handle, one end of the outer cylinder is arranged at the far end of the communication needle handle, the other end of the outer cylinder extends to be arranged at the near end of the needle point of the communication needle, the cylinder cap is screwed outside the outer cylinder to seal the communication needle, a compression spring 15 is arranged inside the outer cylinder at one end of the communication needle handle, one end of the compression spring is contacted with the end face of the outer cylinder, the other end of the compression spring is contacted with the communication needle handle, and a pipeline for communicating the blood drawing end and the blood supply end passes through the center of the compression spring. Therefore, when not in use, the communicating needle can be sealed by the cylinder cap, so that the phenomenon that the needle point stretches out to hurt people under the action of external force is avoided, and the safety is further improved.
As a further improvement of the scheme, as shown in fig. 2, a first positioning nail 16 is arranged on the side wall of the outer cylinder, and a positioning nail hole 17 for limiting and fixing the positioning nail is arranged on the communicating needle handle. Thus, when the communication needle is pressed into the housing, the compression spring is compressed to have a certain elastic force, and the release of the elastic force can be prevented by the positioning nail, but when the communication needle needs to be used, the positioning nail can be opened to realize the extension of the communication needle.
As a further improvement of the scheme, as shown in fig. 3, a second positioning nail 18 is further arranged on the side wall of the outer barrel, and the second positioning nail is arranged near the needle point area of the communicating needle. When the communication needle is released, the communication needle is in a free state, no supporting force exists when the communication vacuum tube is communicated, and the puncture is inconvenient, so that the second positioning nail is arranged in the corresponding area and is inserted into the positioning hole to be limited and fixed, so that the communication needle has a certain axial support, and the puncture operation can be performed, thereby realizing the communication operation.
As a modification of this embodiment, as shown in fig. 9 to 10, the length of the adhesive sheet is twice the length of the puncture needle handle, one half of the length of the adhesive sheet is adhered and fixed to the puncture needle handle, and the other half of the adhesive sheet is in a free state, and the other side of the adhesive sheet is folded in half along the middle line thereof and adhered and fixed. Thus, the adhesive sheet has a longer adhesive fixing area, and the fixing effect is better.
As a further improvement of the present embodiment, as shown in fig. 9, the adhesive sheet is provided with a release film 19 on one side thereof folded in half along the center line, and the release film separates the partial areas of the adhesive sheet itself from each other, thereby reducing the adhesive force therebetween and facilitating easier opening.
As a further modification of the present embodiment, as shown in fig. 7, the portion of the adhesive sheet in a free state is provided with a protective film 20. The protective film prevents external contamination and maintains its tackiness.
When the blood sampling device is used, the protective film is torn off firstly, the protective film is fixed at the front end and the rear end of the puncture needle handle by the thumb and the index finger, the middle finger is propped against the adhesive sheet and forms adhesion, after the puncture is finished, the middle finger stretches outwards, so that the adhesive sheet is driven to be opened, the puncture needle is directly stuck and fixed on the skin of a human body, the puncture and the fixation are finished by one hand, then the sealing cover is opened, the first positioning nail is taken out, the communication needle stretches out of the outer cover under the action of elastic force, when the blood sampling device is stationary, the second positioning nail is inserted into the positioning hole to form fixation, then the communication needle is punctured into the vacuum tube, the blood sampling device is used for accessing the vacuum tube under the communication negative pressure, when the blood sampling device reaches a preset quantity, the communication needle is taken out, the sealing cap is elastically restored, the full-length range of the communication needle is protected, the adhesive sheet is torn off, the puncture needle is taken out, and the puncture needle is sealed by the needle cap, and the blood sampling operation is finished.
The adhesive sheet is creatively arranged on two sides of the embodiment, so that the adhesive sheet can be fixed with a needle handle on one hand, can be adhered to skin on the other hand, and can be opened by fingers.
The other side of the adhesive sheet is provided with the isolating film creatively, and the adhesive force of the isolating film can be set to be smaller than the adhesive force between the adhesive sheet and the middle finger through experiments or calculation, so that the aim is fulfilled.
The communication needle is creatively sealed through the outer cover, and the sealing cover is opened when the communication needle is used, so that the harm to a human body when the communication needle is not used can be avoided.
The inventive whole length range of the communication needle is sleeved with the sealing cap, and the sealing cap hard section is blocked, so that the communication needle cannot slide out from the side surface of the sealing cap when the sealing cap is inclined, and the soft section of the sealing cap also has better elasticity, so that the communication vacuum tube can be punctured, and the sealing cap can be elastically restored to naturally extend out to wrap the communication needle after use, thereby preventing the medical staff from being pricked.
The embodiment also realizes different use states through the combined application of the positioning nails and the positioning holes, and ensures the realization of the blood drawing function.
In a word, the inventive combination of the positioning nail, the positioning hole, the adhesive sheet, the outer cover and the sealing cap solves the problems of low blood drawing efficiency and poor safety in the prior art, and improves the efficiency and safety of blood drawing operation
As a further improvement of this embodiment, as shown in fig. 11-13, the driving ends of the first positioning nail and the second positioning nail are provided with a locking structure, the locking structure includes a left slide hole 21 and a right slide hole 22 symmetrically arranged at the driving ends, the left slide hole is provided with a left slide block 23 and a left connecting rod 24, the right slide hole is provided with a right slide block 25 and a right connecting rod 26, the left connecting rod is arranged between the left slide block and the left slide hole bottom, the right connecting rod is arranged between the right slide block and the right slide hole bottom, elastic pieces are respectively arranged between the left slide block and the left slide hole and between the right slide block and the right slide hole, the elastic pieces are springs 27, connecting rod sliding cavities 28 are respectively arranged in the left slide block and the right slide hole, step holes 29 for preventing the connecting rods from sliding out are respectively arranged in the connecting rod sliding cavities, and the left connecting rod and the right connecting rod are respectively provided with an anti-drop handle 30 with a diameter larger than the step holes. Therefore, when the first positioning nail or/and the second positioning nail enter the positioning hole, the left sliding block or the right sliding block moves left and right in the respective step hole, so that telescopic adjustment is carried out along the respective sliding hole, the size of the positioning hole is adapted, and finally positioning and fixing are realized.
In this embodiment, the connecting rods are all in threaded connection with the slide holes to form detachable connection.
As a further improvement of the present embodiment, as shown in fig. 13, the front ends of the left and right sliders are provided in a tapered shape, and the tips of the tapered shapes are rounded. The round positioning hole is convenient to enter or exit due to the better adaptability after being rounded.
As a further improvement of the present embodiment, as shown in fig. 13, both the left slider and the right slider adopt a combined structure. The two connecting rods are assembled together, so that the anti-falling handle of the left connecting rod or the right connecting rod can be put in first, and assembly is realized.
As a further modification of this embodiment, as shown in fig. 4, a puncture-resistant layer 31 is provided in the outer cover. The puncture-proof layer can be a metal sheet or other high polymer materials, so that the puncture-proof layer is not punctured when the positioning needle fails, and the use is safer.
In addition, as shown in the figure, the outer cylinder is internally provided with a guide sleeve 32, and the guide sleeve is provided with an inner diameter matched with the needle handle of the connecting needle, so that the guide sleeve has a good guide function and ensures that the ejection direction is not inclined. Meanwhile, a limiting taper sleeve 33 is further arranged in the outer cylinder, and the limiting taper sleeve is provided with limiting taper, so that when the communication needle is ejected, the needle handle of the communication needle can be limited, and the communication needle is prevented from sliding out of the outer cylinder.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered by the scope of the claims of the present invention.
Claims (10)
1. Prevent stabbing needle of drawing blood, including drawing blood end and blood supply end, the end of drawing blood is provided with pjncture needle and pjncture needle handle, the end of supplying blood is provided with communication needle and communication needle handle, its characterized in that: the puncture needle comprises a puncture needle handle, and is characterized in that an adhesive piece is arranged on the puncture needle handle, the two sides of the adhesive piece are provided with an adhesive, the length of the adhesive piece is larger than that of the puncture needle handle, part of the length of one side of the adhesive piece is adhered and fixed with the puncture needle handle, the rest part of the adhesive piece is in a free state, the other side of the adhesive piece is adhered and fixed along the boundary line between the adhered part and the free part, the blood supply end is further provided with a sealing cover and an outer cover, the sealing cover is sleeved on the whole length of the communication needle, the sealing cover at least comprises a soft section and a hard section, the hard section is arranged in the needle point area of the communication needle, the hard section and the communication needle are in clearance fit with 0.05-0.2mm, the outer cover comprises an outer cylinder and a cylinder cap, the outer cylinder is sleeved on the outside of the communication needle and the communication needle handle, one end of the outer cylinder is arranged at the far end of the communication needle handle, one end extends to be arranged at the near end of the needle point of the communication needle point, the cylinder cap is screwed on the outside of the outer cylinder, the inner part of the communication needle is provided with a compression spring, the compression end face of the outer cylinder is arranged at one end of the outer cylinder, the compression spring is in the compression end of the outer cylinder, and the compression spring is in contact with the compression force of the compression spring or the compression force of the compression spring is arranged in the blood supply tube and can pass through the compression force and the compression force-finger and the compression force-sensitive adhesive film, and can pass through the compression finger adhesive film, and the compression force can pass through the compression finger adhesive film, and the compression finger adhesive film, and the compression force can pass through the adhesive film, and the adhesive film can pass.
2. The puncture-resistant blood drawing needle according to claim 1, wherein: the length of the adhesive sheet is twice that of the puncture needle handle, one half of the length of one surface of the adhesive sheet is fixedly bonded with the puncture needle handle, the other half of the adhesive sheet is in a free state, and the other surface of the adhesive sheet is fixedly folded along the middle line of the adhesive sheet in a doubling mode.
3. The puncture-resistant blood drawing needle according to claim 2, wherein: one side of the adhesive sheet, which is folded in half along the middle line, is provided with a separation film, and the separation film enables partial areas of the adhesive sheet, which are adhered by the adhesive sheet, to be separated from each other.
4. A puncture-resistant blood drawing needle according to claim 3, wherein: the part of the adhesive sheet in a free state is provided with a protective film.
5. The puncture-resistant blood drawing needle according to claim 1, wherein: the side wall of the outer barrel is provided with a first positioning nail, and the communicating needle handle is provided with a positioning nail hole for the positioning nail to enter for limiting and fixing.
6. The puncture-resistant blood drawing needle according to claim 5, wherein: the side wall of the outer barrel is also provided with a second positioning nail, and the second positioning nail is arranged in a region close to the needle point of the communication needle.
7. The puncture-resistant blood drawing needle according to claim 6, wherein: the utility model discloses a nail, including first locating nail and second locating nail, the nail is gone into the end and is provided with locking structure, locking structure includes left slide hole and the right slide hole that is the symmetry setting at the nail income end, left slide hole is provided with left slider and left connecting rod, right slide hole is provided with right slider and right connecting rod, left connecting rod sets up between left slider and left slide hole end, right connecting rod sets up between right slider and right slide hole end, all is provided with the elastic component between left slider and left slide hole and between right slider and right slide hole, all is provided with the connecting rod sliding chamber in left slider and right slide hole, the connecting rod sliding intracavity is provided with the step hole that prevents the connecting rod roll-off, left connecting rod and right connecting rod all are provided with the anticreep handle that the diameter is greater than the step hole.
8. The puncture-resistant blood drawing needle according to claim 7, wherein: the front ends of the left sliding block and the right sliding block are arranged to be conical, and the conical tips are rounded.
9. The puncture-resistant blood drawing needle according to claim 1, wherein: the outer cylinder is internally provided with a guide sleeve and a limiting taper sleeve.
10. The puncture-resistant blood drawing needle according to claim 1, wherein: the soft section is made of rubber materials, and the hard section is made of hard plastic materials.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111198253.0A CN113827235B (en) | 2021-10-14 | 2021-10-14 | Puncture-proof blood drawing needle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111198253.0A CN113827235B (en) | 2021-10-14 | 2021-10-14 | Puncture-proof blood drawing needle |
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| CN113827235A CN113827235A (en) | 2021-12-24 |
| CN113827235B true CN113827235B (en) | 2024-03-29 |
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| JP6099612B2 (en) * | 2014-10-22 | 2017-03-22 | 日出夫 文山 | Puncture needle unit, puncture needle device and safety tube for them |
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| CN203861238U (en) * | 2014-06-10 | 2014-10-08 | 孙长虹 | Disposable blood collecting needle |
| CN203873767U (en) * | 2014-06-17 | 2014-10-15 | 刘慧卿 | Novel blood collecting needle |
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| CN113827235A (en) | 2021-12-24 |
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