CN108635666B - Heparin cap - Google Patents
Heparin cap Download PDFInfo
- Publication number
- CN108635666B CN108635666B CN201810784822.1A CN201810784822A CN108635666B CN 108635666 B CN108635666 B CN 108635666B CN 201810784822 A CN201810784822 A CN 201810784822A CN 108635666 B CN108635666 B CN 108635666B
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- China
- Prior art keywords
- connecting base
- negative pressure
- moving
- piece
- driving
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- HTTJABKRGRZYRN-UHFFFAOYSA-N Heparin Chemical compound OC1C(NC(=O)C)C(O)OC(COS(O)(=O)=O)C1OC1C(OS(O)(=O)=O)C(O)C(OC2C(C(OS(O)(=O)=O)C(OC3C(C(O)C(O)C(O3)C(O)=O)OS(O)(=O)=O)C(CO)O2)NS(O)(=O)=O)C(C(O)=O)O1 HTTJABKRGRZYRN-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 229960002897 heparin Drugs 0.000 title claims abstract description 48
- 229920000669 heparin Polymers 0.000 title claims abstract description 48
- 239000008280 blood Substances 0.000 claims abstract description 34
- 210000004369 blood Anatomy 0.000 claims abstract description 34
- 238000007789 sealing Methods 0.000 claims abstract description 13
- 238000003825 pressing Methods 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 8
- 238000012360 testing method Methods 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 4
- 239000007779 soft material Substances 0.000 description 4
- 238000004159 blood analysis Methods 0.000 description 3
- 238000009534 blood test Methods 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000474 nursing effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/20—Closure caps or plugs for connectors or open ends of tubes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
Landscapes
- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Pulmonology (AREA)
- Vascular Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses a heparin cap, which comprises a connecting base and a moving part, wherein the connecting base is provided with a connecting base; one end of the connecting base is connected with the indwelling pipeline system, the other end of the connecting base is connected with the moving piece in a sealing way, and an inner cavity is formed between the moving piece and the connecting base; and driving the moving part to move in a direction away from the connecting base so as to form negative pressure in the inner cavity, and performing blood drawing examination through the formed negative pressure. The heparin cap provided by the invention has the advantages that the blood drawing and checking function is increased, the heparin cap is matched with the indwelling needle for use, the operation of medical staff is convenient along with the complete use period of the indwelling needle, the use amount of disposable consumables such as a prefilled catheter flusher and the like is reduced, the medical expenditure is saved, and the pollution risk of an external port of the indwelling needle is reduced.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to a heparin cap.
Background
In the application field of medical instruments, a heparin cap is always a common accessory of an infusion instrument and is often used in combination with an indwelling needle to serve as a port for operation of injecting liquid medicine, a flushing pipe and the like after puncture.
The combined instrument of the indwelling needle and the heparin cap needs to check whether the indwelling needle catheter matched with the indwelling needle catheter is unobstructed by utilizing a blood drawing mode in the using process, and because the heparin cap is single in function, the operation is generally to connect the indwelling needle by adopting a syringe filled with saline, the blood drawing check is carried out by manual back drawing, after the check is finished, the syringe is washed and sealed, or the syringe is removed after the syringe is washed, the transfusion operation is carried out after the syringe is removed, but the blood drawing check needs to use disposable consumables such as a disposable syringe or a prefilled catheter flusher, and the like, the cost is high, and four actions of connection, back drawing, pushing and removing are needed, so that the operation is complex, the indwelling needle catheter is inevitably exposed in a short time of a port in the connecting and removing process, and the port position is inevitably polluted.
Disclosure of Invention
Therefore, the invention aims to provide the heparin cap, which has the advantages that on the basis of the original function of the heparin cap, the blood drawing and checking function is added, the heparin cap is matched with the indwelling needle for use, the operation of medical staff is convenient along with the complete use period of the indwelling needle, the use amount of disposable consumables such as a prefilled catheter flusher is reduced, the medical expenditure is saved, and the pollution risk of an external port of the indwelling needle is reduced.
In order to achieve the above purpose, the present invention provides the following technical solutions:
A heparin cap comprises a connecting base and a moving piece;
One end of the connecting base is connected with the indwelling pipeline system, the other end of the connecting base is connected with the moving piece in a sealing way, and an inner cavity is formed between the moving piece and the connecting base;
And driving the moving part to move in a direction away from the connecting base so as to form negative pressure in the inner cavity, and performing blood drawing examination through the formed negative pressure.
Preferably, the device further comprises a driving member;
The driving piece is arranged outside the moving piece;
The movable member is moved away from the connecting base by pressing the driving member to form negative pressure in the inner cavity, and the blood drawing examination is performed by the formed negative pressure.
Preferably, in the process of pressing the driving member to move the moving member in a direction away from the connection base, the volume of the inner cavity increases, and thus a negative pressure is formed in the inner cavity.
Preferably, the connecting base comprises an interface end and a supporting end, wherein the interface end is connected with the indwelling pipeline system, and the supporting end is in sealing connection with the moving piece.
Preferably, the support end is slidably connected with the moving member, the support end is provided with a stop chute, the moving member is provided with a clamping sliding key matched with the stop chute, the clamping sliding key of the moving member is driven to slide on the stop chute so that the moving member moves in a direction away from the connecting base, negative pressure is formed in the inner accommodating cavity, and the blood drawing and back examination is performed through the formed negative pressure.
Preferably, the moving member is an elastic member, the supporting end is in sealing connection with the moving member, and in the process that the moving member moves in a direction away from the connecting base, the moving member is elastically deformed, the volume of the inner cavity is increased, and then negative pressure is formed in the inner cavity.
Preferably, the driving member is an elastic cap;
the driving piece is sleeved on the periphery of the moving piece;
The movable part is provided with a movable space at the joint of the movable part and the connecting base, the driving part is pressed corresponding to the movable space, the driving part deforms and enables the movable part to move towards the direction away from the connecting base, so that negative pressure is formed in the inner accommodating cavity, and the blood drawing and back examination is carried out through the formed negative pressure.
Preferably, a guiding element is further arranged on the outer side of the driving element, the guiding element is pressed corresponding to the movable space, the driving element deforms and enables the moving element to move towards a direction away from the connecting base, so that negative pressure is formed in the inner cavity, and the blood drawing and back examination is performed through the formed negative pressure.
Preferably, the driving piece is a telescopic ring, the driving piece comprises a fixed end and a movable end, the fixed end is propped against the connecting base, and the movable end is connected with the movable piece;
The driving piece is provided with a bulge, the bulge is pressed to enable the moving end to move, the moving piece is driven to move towards the direction away from the connecting base, so that negative pressure is formed in the inner accommodating cavity, and blood drawing and checking are conducted through the formed negative pressure.
Preferably, the moving member includes an open end and a head end, and the open end is in sealing connection with the connection base;
The outer side of the opening end is sleeved with a fastening ring, the fastening ring comprises an abutting end and a first guide end, and the abutting end abuts against the connecting base;
the outer side of the head end is provided with a guide ring, the guide ring comprises an open end and a second guide end, and the open end is connected with the head end;
A gap is arranged between the first guide end and the second guide end;
The driving piece is arranged at the gap and is contacted with the first guide end and the second guide end through the gap;
The driving piece is pressed to enable the guide ring to move towards the direction far away from the connecting base, and the moving piece is driven to move towards the direction far away from the connecting base, so that negative pressure is formed in the inner accommodating cavity, and blood drawing and checking are conducted through the formed negative pressure.
According to the technical scheme, it can be known that in the invention, the heparin cap comprises a connecting base and a moving piece; one end of the connecting base is connected with the indwelling pipeline system, the other end of the connecting base is connected with the moving piece in a sealing way, and an internal cavity is formed between the moving piece and the connecting base; the moving member is driven to move in a direction away from the connecting base so as to form negative pressure in the inner cavity, and the blood drawing examination is carried out through the formed negative pressure. There is inside appearance chamber between moving part and the connection base, inside appearance chamber communicates through the connection base with the pipeline system that keeps somewhere, when the drive moving part moves towards the direction of keeping away from the connection base, can make the inside appearance chamber volume increase between moving part and the connection base, under the circumstances that has certain leakproofness, then will form certain negative pressure in the inside appearance intracavity this moment, can accomplish the blood examination of drawing back, only need heparin cap self can accomplish the blood examination of drawing back, and need not external source apparatus such as syringe, keep somewhere pipeline system and be in the closure state all the time, can not bring pollution consequently, the patient uses the needle that keeps somewhere safer.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of a first heparin cap according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a first heparin cap according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view of a second heparin cap according to an embodiment of the present invention;
FIG. 4 is a schematic view of a third heparin cap according to an embodiment of the present invention;
FIG. 5 is a cross-sectional view of a third heparin cap according to an embodiment of the present invention;
FIG. 6 is another cross-sectional view of a third heparin cap according to an embodiment of the present invention;
FIG. 7 is a schematic view of a fourth heparin cap according to an embodiment of the present invention;
FIG. 8 is a cross-sectional view of a fourth heparin cap according to an embodiment of the present invention;
FIG. 9 is a schematic view of a fifth heparin cap according to an embodiment of the present invention;
FIG. 10 is a cross-sectional view of a fifth heparin cap according to an embodiment of the present invention;
FIG. 11 is a schematic view of a structure of a connection base according to an embodiment of the present invention;
FIG. 12 is a schematic perspective view of a wedge ring in accordance with an embodiment of the present invention;
FIG. 13 is a front view of a wedge ring in accordance with an embodiment of the present invention;
wherein, the reference numerals in the drawings are as follows:
1-connection base, 101-interface end, 102-support end, 2-moving piece, 201-opening end, 202-head end, 3-internal holding cavity, 4-stop chute, 5-clamping sliding key, 6-elastic cap, 7-movable space, 8-guide piece, 9-fixed end, 10-moving end, 11-bulge, 12-fastening ring, 121-abutting end, 122-first guide end, 13-guide ring, 131-opening end, 132-second guide end, 14-gap, 15-wedge ring, 151-elastic ring, 152-wedge block.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. 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.
Referring to fig. 1-13, fig. 1 is a schematic structural diagram of a first heparin cap according to an embodiment of the present invention; FIG. 2 is a cross-sectional view of a first heparin cap according to an embodiment of the present invention; FIG. 3 is a cross-sectional view of a second heparin cap according to an embodiment of the present invention; FIG. 4 is a schematic view of a third heparin cap according to an embodiment of the present invention; FIG. 5 is a cross-sectional view of a third heparin cap according to an embodiment of the present invention; FIG. 6 is another cross-sectional view of a third heparin cap according to an embodiment of the present invention; FIG. 7 is a schematic view of a fourth heparin cap according to an embodiment of the present invention; FIG. 8 is a cross-sectional view of a fourth heparin cap according to an embodiment of the present invention; FIG. 9 is a schematic view of a fifth heparin cap according to an embodiment of the present invention; FIG. 10 is a cross-sectional view of a fifth heparin cap according to an embodiment of the present invention; FIG. 11 is a schematic view of a structure of a connection base according to an embodiment of the present invention; FIG. 12 is a schematic perspective view of a wedge ring in accordance with an embodiment of the present invention; FIG. 13 is a front view of a wedge ring in accordance with an embodiment of the present invention.
As shown in fig. 1 to 13, a heparin cap comprises a connection base 1 and a movable member 2; one end of the connecting base 1 is connected with the indwelling pipeline system, the other end of the connecting base is connected with the moving piece 2 in a sealing way, and an inner containing cavity 3 is formed between the moving piece 2 and the connecting base 1; by driving the moving member 2 to move in a direction away from the connection base 1, a negative pressure is formed in the internal cavity 3, and a blood withdrawal test is performed by the formed negative pressure. There is inside appearance chamber 3 between moving part 2 and the connection base 1, inside appearance chamber 3 communicates through connection base 1 with the pipeline system that keeps somewhere, when the drive moving part 2 moves towards the direction of keeping away from connection base 1, can make the inside appearance chamber 3 volume increase between moving part 2 and the connection base 1, under the circumstances that has certain leakproofness, then will form certain negative pressure in the inside appearance chamber 3 at this moment, can accomplish the blood test of drawing back, only need heparin cap itself can accomplish the blood test of drawing back, and external source apparatus such as external syringe are not needed, keep somewhere pipeline system and be in the confined state all the time, can not bring pollution consequently, the patient uses the needle of keeping somewhere safer. The indwelling catheter system may be an indwelling needle, or may be a combination of an indwelling needle and an indwelling catheter. As shown in fig. 11, the connection base 1 includes a connection port 101 and a support port 102, the connection port 101 is connected to the indwelling line system, the support port 102 is connected to the moving member 2 in a sealing manner, and the connection port 101 and the support port 102 are communicated with each other, so that the indwelling line system and the moving member 2 are also communicated with each other. It should be noted that, in this embodiment, the movement in the direction away from the connection base 1 may be a relative displacement between the connection point of the movable member 2 and the connection base 1, or may be a relative movement generated by elongating only the movable member 2 itself, and both the movement modes may increase the volume of the inner cavity 3 and form a certain negative pressure.
In one embodiment of the present invention, as shown in FIGS. 1-13, a drive member is also included; the driving piece is arranged outside the moving piece 2; the moving member 2 is moved in a direction away from the connection base 1 by pressing the driving member so as to form negative pressure in the internal cavity 3, and the blood drawing examination is performed by the formed negative pressure, and the volume of the internal cavity 3 is increased and then the negative pressure is formed in the internal cavity 3 in the process that the moving member 2 is moved in a direction away from the connection base 1 by pressing the driving member. The driving piece can be sleeved outside the moving piece 2 to seal with the moving piece 2 so as to facilitate pressing, and the driving piece can only cover the side face of the moving piece 2, so long as a force for driving the moving piece 2 to move in a direction far away from the connecting base 1 can be generated for the moving piece 2 in the process of pressing the driving piece, when the moving piece 2 is driven to move in a direction far away from the connecting base 1, the volume of the inner containing cavity 3 between the moving piece 2 and the connecting base 1 can be increased, and negative pressure is generated in the inner containing cavity 3, so that blood drawing examination is completed. It should be noted that, in this embodiment, the movement in the direction away from the connection base 1 may be a relative displacement between the connection point of the movable member 2 and the connection base 1, or may be a relative movement generated by elongating only the movable member 2 itself, and both the movement modes may increase the volume of the inner cavity 3 and form a certain negative pressure.
In a specific embodiment of the present invention, as shown in fig. 3, the support end 102 is slidably connected to the moving member 2, the support end 102 is provided with a stop chute 4, the moving member 2 is provided with a clamping sliding key 5 matched with the stop chute 4, the clamping sliding key 5 of the moving member 2 is driven to slide on the stop chute 4 so as to enable the moving member 2 to move in a direction away from the connection base 1, a negative pressure is formed in the internal cavity 3, and a blood drawing examination is performed by the formed negative pressure. The connection between the support end 102 and the moving member 2 may be a clamping connection or a sleeving connection, so long as the same technical effect can be achieved, the sleeving connection may be the inscription between the support end 102 and the moving member 2, or the inscription between the support end 102 and the moving member 2 may be the inscription between the support end 102 and the moving member 2, the inside of the support end 102 may be provided with the stop chute 4, the moving member 2 may be provided with the clamping sliding key 5 matched with the stop chute 4, so that the moving member 2 is driven by manual operation or by pressing the driving member to complete the movement of the moving member 2 in the direction away from the connection base 1 through the sliding clamping of the clamping sliding key 5, at this time, the relative displacement occurs between the connecting part of the moving member 2 and the support end 102, under the condition that the connection between the moving member 2 and the support end 102 is sealed, the volume of the internal cavity 3 is increased to form a negative pressure, thereby completing the blood withdrawal examination, when the moving member 2 needs to be restored, the moving member 2 is directly pushed to the initial position, and when the support end 102 and the moving member 2 are externally connected.
In a specific embodiment of the present invention, the moving member 2 is an elastic member, the supporting end 102 is connected with the moving member 2 in a sealing manner, the moving member 2 has a certain pretension, and during the moving of the moving member 2 in a direction away from the connection base 1, the moving member 2 is elastically deformed, the volume of the inner cavity 3 is increased, and thus a negative pressure is formed in the inner cavity 3. The connection between the moving member 2 and the supporting end 102 is a sealed connection, and since the moving member 2 is an elastic member, when the moving member 2 moves in a direction away from the connection base 1 by manual operation or pressing of the driving member, the connection between the moving member 2 and the supporting end 102 does not move relatively, and the moving member 2 will elastically deform, i.e. be elongated in a direction away from the connection base 1, so that the distal end of the moving member 2 away from the connection base 1 moves relatively to the connection base 1, at this time, the volume of the inner cavity 3 will be increased, thereby forming a negative pressure, and further completing the blood withdrawal examination.
In one embodiment of the invention, as shown in fig. 4-6, the driving member is an elastomeric cap 6; the driving piece is sleeved on the periphery of the moving piece 2; the movable space 7 is arranged at the joint of the movable part 2 and the connecting base 1, the driving part is pressed corresponding to the movable space 7, the driving part deforms and enables the movable part 2 to move towards the direction far away from the connecting base 1, so that negative pressure is formed in the inner accommodating cavity 3, and the blood drawing and checking is carried out through the formed negative pressure. The elastic cap 6 is sleeved on the periphery of the moving member 2 to form a good seal with the moving member 2, the driving member is manually pressed corresponding to the movable space 7, so that the driving member moves towards the movable space 7, the driving member is deformed, meanwhile, fingers can generate a force for pushing the moving member 2 to move away from the connecting base 1 through the driving member, the moving member 2 moves away from the connecting base 1 along with the deformation of the driving member, and here, the moving member 2 can move away from the connecting base 1 in a specific way, namely, the connecting part of the moving member 2 and the connecting base 1 can be relatively displaced, or the connecting part of the moving member 2 and the connecting base 1 can not relatively move, and only the moving member 2 is elongated as an elastic member, and the two moving modes can increase the volume of the inner accommodating cavity 3, and forms certain negative pressure, which is not described in detail in the previous embodiment, meanwhile, the size of the movable space 7 is not limited specifically, and can be the width of one finger or the width of two fingers, a gap 14 is arranged, the form of the movable space 7 is not limited specifically, a circumferential cavity can be formed, a groove cavity can be formed, even a soft material can be formed, for example, by pressing a driving member structure corresponding to a soft material area, at the moment, the soft material deforms to generate a space for pressing the driving member structure to move, the same technical effect can be achieved, the soft material can be sponge, rubber and the like, so that the movable member 2 and the connecting base 1 can be correspondingly adjusted according to actual requirements when in inscription or external connection, in the prior art, the same technical effects can be achieved, and the description is omitted, when the movable member 2 needs to be restored, the driving member is only required to be loosened or released, and the connecting member can be restored to the initial position through elastic restoration of the driving member and the movable member 2.
In one embodiment of the present invention, as shown in fig. 7 and 8, a guide member 8 is further provided at the outer side of the driving member, and the driving member is deformed to move the moving member 2 in a direction away from the connection base 1 in response to the pressing of the guide member 8 by the movable space 7, so as to form a negative pressure in the inner cavity 3, and the blood withdrawal test is performed by the formed negative pressure. The guide member 8 is preferably a guide ring 13, which is sleeved on the outer side of the driving member, the guide ring 13 is manually pressed or pressed above the movable space 7 corresponding to the movable space 7, the movement of the guide ring 13 inevitably drives the driving member to move towards the movable space 7, the driving member naturally deforms, a force for driving the moving member 2 to move is generated when the finger acts on the driving member through the guide ring 13, the moving member 2 is stretched or moves in a displacement manner between the connecting positions of the moving member 2 and the connecting base 1 in coordination with the deformation of the driving member, the volume of the inner cavity 3 is correspondingly increased, so that negative pressure is formed, the same technical effect is achieved, when the moving member 2 needs to be restored, the pressing force is relieved, and then the moving member 2 returns to the initial position through elastic restoration of the moving member 2 and elastic restoration of the driving member.
In a specific embodiment of the present invention, as shown in fig. 9 and 10, the driving member is a telescopic ring, the driving member includes a fixed end 9 and a moving end 10, the fixed end 9 abuts against the connection base 1, the moving end 10 is connected with the moving member 2, and the moving member 2 has a certain pretension; the driving piece is provided with the bulge 11, press the bulge 11 and make the mobile terminal 10 remove to drive mobile piece 2 to move towards the direction of keeping away from connection base 1, in order to form the negative pressure in interior appearance intracavity 3, carry out the blood examination of drawing back through the negative pressure that forms, mobile terminal 10 and mobile piece 2's connected mode can be the joint, also can bond, also can cup joint, also can be contact connection, as long as can the mobile terminal 10 can drive mobile piece 2's removal and keep certain sealed when the driving piece stretches out and draws back, the setting of bulge 11 can be along the expansion ring circumference setting, for example cage ring, also can be the local setting bulge 11, do not limit more to the quantity of bulge 11, as long as can make the expansion ring receive after certain pressure can have certain expansion space. In this embodiment, the movement in the direction away from the connection base 1 may be a relative displacement between the connection part of the moving member 2 and the connection base 1, or may be a relative displacement in which the moving member 2 itself is stretched as an elastic member, and both the moving manners may increase the volume of the inner cavity 3 and form a certain negative pressure, which is described in detail in the foregoing embodiment, and when the moving member 2 needs to be restored, the pressing force is released, and the telescopic ring drives the moving member 2 to the initial position through elastic restoration, or the elastic force of the moving member 2 is restored or pushes the moving member 2 to return to the initial position.
In one embodiment of the present invention, as shown in fig. 1 and 2, the moving member 2 includes an open end 201 and a head end 202, and the open end 201 is hermetically connected to the connection base 1; the outside of the opening end 201 is sleeved with a fastening ring 12, the fastening ring 12 comprises an abutting end 121 and a first guide end 122, and the abutting end 121 abuts against the connecting base 1; the outside of the head end 202 is provided with a guide ring 13, the guide ring 13 comprises an open end 131 and a second guide end 132, and the open end 131 is connected with the head end 202; a gap 14 is provided between the first guide end 122 and the second guide end 132; the driving member is disposed at the gap 14, and the driving member is in contact with the first guide end 122 and the second guide end 132 through the gap 14; the driving member is pressed to enable the guide ring 13 to move in the direction away from the connection base 1 and drive the moving member 2 to move in the direction away from the connection base 1 so as to form negative pressure in the inner accommodating cavity 3, and the blood drawing examination is carried out through the formed negative pressure. The inner sides of the first guide end 122 and the second guide end 132 are matched with the guide ring 13, so that the guide ring 13 can only reciprocate along the circumferential direction, the connection mode of the open end 131 and the head end 202 can be clamping connection, bonding connection, sleeving connection or contact connection, as long as the guide ring 13 can drive the movement of the moving member 2 and keep a certain seal when moving towards the direction far away from the connection base 1, after the driving member is pressed, the driving member moves towards the gap 14, even deforms, the guide ring 13 is further pressed to move towards the direction far away from the fastening ring 12, namely away from the connection base 1, the movement of the guide ring 13 towards the direction far away from the connection base 1 in the embodiment can be the relative displacement between the connection part of the moving member 2 and the guide ring 13, or the relative displacement between the connection part of the moving member 2 and the guide ring 13 does not occur, only the guide ring 13 itself is elongated and relatively moved as an elastic member, and both the two moving manners can make the moving member 2 correspondingly move or deform, so that the volume of the inner cavity 3 is increased and a certain negative pressure is formed, and the same reason is that the moving member 2 can relatively move between the moving member 2 and the connecting position of the connecting base 1 or not relatively move between the moving member 2 and the connecting position of the connecting base 1, and only the moving member 2 itself is elongated and relatively moved as an elastic member, and both the two moving manners can make the volume of the inner cavity 3 increased and a certain negative pressure is formed, and the principle portions herein have been described in detail in the previous embodiment, which are not repeated herein, when the moving member 2 needs to be restored, the driving piece is only required to be loosened, the pressing force is released, and then the elastic force of the moving piece 2 and the guide ring 13 is used for restoring or pushing the moving piece 2 and the guide ring 13 to return to the initial position.
In a specific embodiment of the present invention, as shown in fig. 1, 2, 12 and 13, the driving member is a wedge ring 15, the wedge ring 15 includes an elastic ring 151 and a wedge block 152, the wedge blocks 152 are circumferentially distributed, a certain gap is left between each other, the elastic ring 151 is connected with all the wedge blocks 152 in series to form a deformable embedded annular structure or a spaced embedded annular structure, the wedge blocks 152 can be uniformly distributed or non-uniformly distributed, the wedge blocks 152 can be driven by pressing the elastic ring 151 to directly or indirectly squeeze the connecting member, for example, the wedge blocks 152 can be clamped in a gap 14 provided between the first guide end 122 and the second guide end 132, the outer edges of the first guide end 122 and the second guide end 132 are provided with chamfers, and contact with the wedge ring 15, the elastic ring 151 is deformed by directly acting on the guide ring 13 and indirectly acting on the connecting piece or deforming the connecting piece, or pressing the wedge block 152 into the movable space 7, the indirectly acting on the connecting piece deforms and serves as a driving piece of the wedge ring 15, certain application can be given to the driving piece in each embodiment of the above expression, for further optimization, the wedge ring 15 is provided with two wedge faces, an included angle between the two wedge faces ranges from 30 degrees to 170 degrees, preferably, the included angle between the two wedge faces is 90 degrees, gaps are circumferentially distributed on the inner side of the wedge ring 15 so as to reduce deformation resistance, the number of the gaps is not less than 4, the distribution of the gaps can be uniformly distributed or non-uniformly distributed, and preferably, the number of the gaps is designed to be 12 evenly distributed circumferentially. The outer edge of the wedge-shaped ring 15 can be set to be regular polygon, the contact area with fingers can be increased, the pressing is convenient, and the outer edge of the wedge-shaped ring 15 is a rough surface and can be saw-tooth lines or other lines.
In summary, the heparin cap of the invention has the advantages that on the basis of not affecting the original functions, the blood drawing and checking function is added, the heparin cap can be repeatedly used along with the whole service cycle of the indwelling needle, the heparin cap can be repeatedly used within the 72-hour service cycle of the indwelling needle, the nursing related cost of the indwelling needle is saved, the implementation of the heparin cap is optimized by designing the wedge-shaped ring 15, the checking function can be realized by extruding the wedge-shaped ring 15 by one hand, the operation is convenient, the blood drawing and checking device can automatically recover after releasing the pressure, no blood remains in the indwelling needle catheter, the indwelling pipeline system is always in a closed state in the blood drawing and checking process, no pollution is caused, and the indwelling needle is safer for patients to use.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. The heparin cap is characterized by comprising a connecting base and a moving piece;
One end of the connecting base is connected with the indwelling pipeline system, the other end of the connecting base is connected with the moving piece in a sealing way, and an inner cavity is formed between the moving piece and the connecting base;
the movable piece is driven to move in a direction away from the connecting base so as to form negative pressure in the inner cavity, and the blood drawing and checking is carried out through the formed negative pressure;
The connecting base comprises an interface end and a supporting end, the interface end is connected with the indwelling pipeline system, and the supporting end is connected with the moving piece in a sealing way;
the device also comprises a driving piece; the driving piece is arranged outside the moving piece; the movable piece is moved away from the connecting base by pressing the driving piece so as to form negative pressure in the inner cavity, and the blood drawing examination is carried out through the formed negative pressure;
The moving piece comprises an opening end and a head end, and the opening end is in sealing connection with the connecting base; the outer side of the opening end is sleeved with a fastening ring, the fastening ring comprises an abutting end and a first guide end, and the abutting end abuts against the connecting base; the outer side of the head end is provided with a guide ring, the guide ring comprises an open end and a second guide end, and the open end is connected with the head end; a gap is arranged between the first guide end and the second guide end; the driving piece is arranged at the gap and is contacted with the first guide end and the second guide end through the gap; the driving piece is pressed to enable the guide ring to move towards the direction away from the connecting base, and the moving piece is driven to move towards the direction away from the connecting base, so that negative pressure is formed in the inner accommodating cavity, and blood drawing and checking are carried out through the formed negative pressure;
The driving piece is a wedge-shaped ring, the wedge-shaped ring comprises an elastic ring and wedge-shaped blocks, the wedge-shaped blocks are circumferentially distributed, a certain gap is reserved between the wedge-shaped blocks, and the elastic ring is connected with all the wedge-shaped blocks in series to form a deformable embedded annular structure or a spacing embedded annular structure; the wedge block is clamped in the gap, two ends of the wedge block are respectively contacted with the first guide end and the second guide end, and the wedge block is pressed to enable the elastic ring to deform.
2. The heparin cap of claim 1, wherein the volume of the interior cavity increases during the pressing of the driving member to move the moving member in a direction away from the connection base, thereby creating a negative pressure within the interior cavity.
3. The heparin cap of claim 1, wherein the support end is slidably connected with the moving member, the support end is provided with a stop chute, the moving member is provided with a clamping sliding key matched with the stop chute, the clamping sliding key of the moving member is driven to slide on the stop chute so as to enable the moving member to move in a direction away from the connecting base, negative pressure is formed in the inner cavity, and the blood drawing examination is performed through the formed negative pressure.
4. The heparin cap of claim 1, wherein the moving member is an elastic member, the support end is in sealing connection with the moving member, and the moving member is elastically deformed in the process of moving in the direction away from the connection base, the volume of the inner cavity is increased, and negative pressure is formed in the inner cavity.
5. The heparin cap of claim 1, wherein the drive member is an elastomeric cap;
the driving piece is sleeved on the periphery of the moving piece;
The movable part is provided with a movable space at the joint of the movable part and the connecting base, the driving part is pressed corresponding to the movable space, the driving part deforms and enables the movable part to move towards the direction away from the connecting base, so that negative pressure is formed in the inner accommodating cavity, and the blood drawing and back examination is carried out through the formed negative pressure.
6. The heparin cap according to claim 5, wherein a guide member is further provided on the outer side of the driving member, said guide member is pressed against said movable space, the driving member is deformed and moves said moving member in a direction away from said connection base to form a negative pressure in said inner cavity, and a blood withdrawal test is performed by the formed negative pressure.
7. The heparin cap of claim 1, wherein the driving member is a telescopic ring, the driving member comprises a fixed end and a movable end, the fixed end abuts against the connecting base, and the movable end is connected with the movable member;
The driving piece is provided with a bulge, the bulge is pressed to enable the moving end to move, the moving piece is driven to move towards the direction away from the connecting base, so that negative pressure is formed in the inner accommodating cavity, and blood drawing and checking are conducted through the formed negative pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810784822.1A CN108635666B (en) | 2018-07-17 | 2018-07-17 | Heparin cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810784822.1A CN108635666B (en) | 2018-07-17 | 2018-07-17 | Heparin cap |
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| Publication Number | Publication Date |
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| CN108635666A CN108635666A (en) | 2018-10-12 |
| CN108635666B true CN108635666B (en) | 2024-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810784822.1A Active CN108635666B (en) | 2018-07-17 | 2018-07-17 | Heparin cap |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109481840B (en) * | 2018-12-21 | 2024-06-18 | 杨恚 | Heparin cap |
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|---|---|---|---|---|
| CN205867218U (en) * | 2016-04-01 | 2017-01-11 | 广东省人民医院 | Separation membrance heparin cap connects |
| CN205947795U (en) * | 2016-05-23 | 2017-02-15 | 中南大学湘雅医院 | Children take negative pressure blood sampling device |
| CN208959128U (en) * | 2018-07-17 | 2019-06-11 | 锦州诺德医疗器械科技有限公司 | A kind of calparine cap |
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| CN201164650Y (en) * | 2007-09-28 | 2008-12-17 | 桂茶华 | Ultra thin type venous indwelling needle with negative-pressure |
| CN102038986A (en) * | 2011-01-18 | 2011-05-04 | 柯丽红 | Vein remaining needle |
| WO2012171193A1 (en) * | 2011-06-16 | 2012-12-20 | Chen Yongxi | Anti-overflow catheter assembly for indwelling needle |
| CN203370153U (en) * | 2013-07-25 | 2014-01-01 | 谢世庚 | Anti-reflux venous indwelling needle |
| JP6280373B2 (en) * | 2014-01-23 | 2018-02-14 | メディキット株式会社 | Indwelling needle used for connection with medical extracorporeal circuit |
| CN103861205A (en) * | 2014-03-13 | 2014-06-18 | 李林风 | Thrombus prevention device with indwelling catheter |
| JP6670437B2 (en) * | 2014-12-09 | 2020-03-25 | ニプロ株式会社 | Needleless connector |
| CN106421960A (en) * | 2016-07-11 | 2017-02-22 | 欧阳小青 | Medical anti-thrombosis infusion connector |
| CN206687972U (en) * | 2016-08-31 | 2017-12-01 | 北京大学深圳医院 | safety indwelling needle |
| CN207286405U (en) * | 2017-03-06 | 2018-05-01 | 曾维富 | A kind of venous detaining needle for showing blood back and preventing thrombosis |
| CN107174690A (en) * | 2017-06-15 | 2017-09-19 | 无锡圣诺亚科技有限公司 | Exempt to sterilize block-by-block avulsion calparine cap |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205867218U (en) * | 2016-04-01 | 2017-01-11 | 广东省人民医院 | Separation membrance heparin cap connects |
| CN205947795U (en) * | 2016-05-23 | 2017-02-15 | 中南大学湘雅医院 | Children take negative pressure blood sampling device |
| CN208959128U (en) * | 2018-07-17 | 2019-06-11 | 锦州诺德医疗器械科技有限公司 | A kind of calparine cap |
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| CN108635666A (en) | 2018-10-12 |
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