CN110755140B - Sternum transfusion needle - Google Patents
Sternum transfusion needle Download PDFInfo
- Publication number
- CN110755140B CN110755140B CN201911188512.4A CN201911188512A CN110755140B CN 110755140 B CN110755140 B CN 110755140B CN 201911188512 A CN201911188512 A CN 201911188512A CN 110755140 B CN110755140 B CN 110755140B
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- Prior art keywords
- sleeve
- trigger
- needle
- firing
- sternum
- Prior art date
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- 210000001562 sternum Anatomy 0.000 title claims abstract description 53
- 238000010304 firing Methods 0.000 claims abstract description 83
- 238000004146 energy storage Methods 0.000 claims abstract description 31
- 238000001802 infusion Methods 0.000 claims description 63
- 239000000428 dust Substances 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 description 4
- 210000000988 bone and bone Anatomy 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 208000027418 Wounds and injury Diseases 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 208000014674 injury Diseases 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 2
- 206010011409 Cross infection Diseases 0.000 description 1
- 206010029803 Nosocomial infection Diseases 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/34—Trocars; Puncturing needles
- A61B17/3472—Trocars; Puncturing needles for bones, e.g. intraosseus injections
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/34—Trocars; Puncturing needles
- A61B17/3403—Needle locating or guiding means
- A61B2017/3405—Needle locating or guiding means using mechanical guide means
Landscapes
- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses a sternum transfusion needle which comprises a firing assembly and a base assembly, wherein the firing assembly comprises a sleeve, a firing shaft, an energy storage mechanism and a trigger mechanism, one end of the firing shaft penetrates through the closed end of the sleeve and stretches into the inner cavity of the sleeve, the energy storage mechanism is arranged between the firing shaft and the sleeve, the trigger mechanism comprises a firing baffle and a trigger disc, the firing baffle is telescopically arranged on one of the sleeve and the firing shaft through a reset piece, the firing baffle can stretch out of the locking firing shaft under the action of the reset piece to enable the energy storage mechanism to be in an energy storage state, the trigger disc is in sliding fit with the sleeve, and the firing baffle can be retracted to release the firing shaft; the base subassembly includes base main part, main needle and vice needle subassembly, and the base main part is used for with sleeve open end sliding fit, and the pointed end and the base main part sliding fit of main needle, and the tail end of main needle is used for stretching into the one end cooperation of sleeve inner chamber with the firing shaft, and vice needle subassembly slides and sets up in base main part and vice needle subassembly can with trigger disk interference fit.
Description
Technical Field
The invention relates to the technical field of medical appliances, in particular to a sternum infusion needle.
Background
The intraosseous infusion is an advanced emergency measure, and when the venipuncture cannot be established, the intraosseous puncture can realize the rapid establishment of an intraosseous infusion channel, so that the treatment rate of emergency personnel on the emergency site is improved. The sternum infusion needle in the market needs an operator to control the firing shaft to apply force to puncture the sternum, the puncture force needs to be more than 100kg, the force requirement on the operator is high, the sternum infusion needle is difficult to use especially when dealing with large-scale group injuries, and the existing sternum infusion needle firing device is disposable and has high use cost.
Disclosure of Invention
Therefore, the invention aims to provide a sternum infusion needle, which can reduce the requirement on the strength of operators and the use cost.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a sternal infusion needle comprising:
The trigger assembly comprises a sleeve, a trigger shaft, an energy storage mechanism and a trigger mechanism, wherein one end of the trigger shaft penetrates through the closed end of the sleeve to extend into the inner cavity of the sleeve and is in sliding fit with the sleeve, the energy storage mechanism is arranged between one end of the trigger shaft extending into the inner cavity of the sleeve and the sleeve, the trigger mechanism comprises a trigger baffle and a trigger disc, the trigger baffle is arranged on one of the sleeve and the trigger shaft in a telescopic manner through a reset piece, the trigger baffle can extend out of the trigger shaft under the action of the reset piece to enable the energy storage mechanism to be in an energy storage state, the trigger disc is in sliding fit with the sleeve, and the trigger disc can move along the opening end of the sleeve towards the direction of the closed end to be in contact fit with the trigger baffle to enable the trigger baffle to retract so as to release the trigger shaft.
The base assembly comprises a base main body, a main needle and an auxiliary needle assembly, wherein the base main body is used for being in sliding fit with the open end of the sleeve, the tip of the main needle and the auxiliary needle assembly are in sliding fit with the base main body, the tail end of the main needle is used for being matched with one end of the firing shaft extending into the inner cavity of the sleeve, and the auxiliary needle assembly can be in abutting fit with the trigger disc so that the trigger disc moves towards the direction of the closed end along the open end of the sleeve.
Preferably, the quick-change assembly comprises an annular clamping sleeve, the annular clamping sleeve is arranged at the opening end of the sleeve, a plurality of spring pins are arranged on one of the outer side wall of the auxiliary needle assembly and the inner side wall of the annular clamping sleeve, pin grooves are formed in the outer side wall of the auxiliary needle assembly and the other of the inner side wall of the annular clamping sleeve, and the spring pins and the pin grooves can be matched with each other so that the quick-change assembly is clamped with the auxiliary needle assembly.
Preferably, the safety device further comprises a safety locking structure for locking the firing shaft and the sleeve relatively, wherein the safety locking structure comprises a stop pin arranged on one end of the firing shaft, which is positioned outside the sleeve, and a safety disc rotatably arranged on the top of the sleeve, an unlocking groove is formed in the safety disc along the direction from the closed end to the open end of the sleeve, and the stop pin is matched with the unlocking groove after the safety disc rotates by a preset angle so as to unlock the firing shaft relatively to the sleeve.
Preferably, a first elastic member is provided between the trigger disc and the sleeve.
Preferably, the open end of the sleeve is provided with a second resilient member for contact engagement with the base body.
Preferably, a positioning cambered surface is arranged on the base main body, and the positioning cambered surface is attached to the sternum notch.
Preferably, the bottom surface of the base body is provided with an attachment for securing the base body to the skin of the sternum.
Preferably, the main needle is sleeved with an infusion hose, and an infusion hose dust cap is arranged on the upper portion of the infusion hose.
Preferably, the infusion tube fixing seat is further included, and the infusion tube fixing seat is used for fixing the infusion tube to the auxiliary needle assembly.
Preferably, the auxiliary needle assembly is mounted on the base body through a connecting sleeve, and foolproof structures are arranged between the connecting sleeve and the auxiliary needle assembly and between the connecting sleeve and the base body.
In order to achieve the above purpose, the invention provides a sternum transfusion needle, which comprises a firing assembly and a base assembly, wherein the firing assembly comprises a sleeve, a firing shaft, an energy storage mechanism and a trigger mechanism, one end of the firing shaft penetrates through the closed end of the sleeve to extend into the inner cavity of the sleeve and is in sliding fit with the sleeve, the energy storage mechanism is arranged between one end of the firing shaft extending into the inner cavity of the sleeve and the sleeve, the trigger mechanism comprises a firing baffle and a trigger disc, the firing baffle is arranged on one of the sleeve and the firing shaft in a telescopic way through a reset piece, the firing baffle can extend out of the locking firing shaft under the action of the reset piece to enable the energy storage mechanism to be in an energy storage state, the trigger disc is in sliding fit with the sleeve, and the trigger disc can move along the opening end of the sleeve towards the direction of the closed end to be in contact with the firing baffle to enable the firing baffle to retract to release the firing shaft; the base assembly comprises a base main body, a main needle and an auxiliary needle assembly, wherein the base main body is used for being in sliding fit with the opening end of the sleeve, the tip end of the main needle and the auxiliary needle assembly are in sliding fit with the base main body, the tail end of the main needle is used for being matched with one end of the firing shaft extending into the inner cavity of the sleeve, and the auxiliary needle assembly can be in abutting fit with the trigger disc so that the trigger disc moves along the opening end of the sleeve towards the direction of the closed end;
When the auxiliary needle assembly is used, firstly, the sleeve and the base body are assembled together, then, the base is placed at the optimal puncture position of the sternum of a patient, at the moment, the triggering piece in the triggering mechanism locks the triggering shaft, the energy storage mechanism is in an energy storage state, the sleeve is pressed to slide downwards relative to the base body, the triggering disc is in contact fit with the auxiliary needle assembly, when the auxiliary needle assembly moves downwards to the bone surface of the patient, force is continuously applied, the auxiliary needle assembly forces the triggering disc to move upwards, meanwhile, the main needle continues to move downwards relatively to reach the bone surface, the triggering disc is matched with the triggering piece under the driving of the auxiliary needle assembly, the triggering piece is retracted under the action of the resetting piece, the triggering shaft is released, and the energy storage mechanism pushes the triggering shaft to drive the main needle to move downwards to puncture the sternum; therefore, the sternum infusion needle is provided with the elastic energy storage mechanism, the puncture process is completed by the elastic energy storage mechanism, an operator only needs to press down to enable the trigger mechanism to release the firing shaft, the requirements of sternum puncture on the strength of the operator are greatly reduced, the strength is saved, the large-scale group injury can be dealt with, and the firing assembly can be repeatedly used by adopting a split type structure in which the firing assembly and the base assembly are detachably connected, so that the waste is reduced, and the use cost is reduced.
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 view of a firing assembly in a sternal infusion needle according to one embodiment of the invention;
Fig. 2 is a schematic structural view of a base assembly in a sternum infusion needle according to one embodiment of the invention;
Fig. 3 is a top view of a base body in a sternum infusion needle according to one embodiment of the invention;
FIG. 4 is a schematic view of the structure of the firing assembly and the base assembly of the sternum infusion needle according to one embodiment of the invention;
Fig. 5 is a schematic structural view of a quick-change assembly in a sternum infusion needle according to an example of the invention.
In the figure:
100 is a firing assembly; 101 is the firing shaft; 102 is a sleeve; 103 is a firing assembly boot; 104 is a stop pin; 105 is an unlocking slot; 106 is a safety disc; 107 is an energy storage mechanism; 108 is a firing baffle; 109 is a reset member; 110 is a trigger plate; 111 is a first elastic member; 112 is a second elastic member; 113 is an annular ferrule; 114 is a spring pin; 200 is a base assembly; 201 is the main needle; 202 is a dust cap of the transfusion hose; 203 is an infusion hose; 204 is a sub-needle assembly; 205 is a connecting sleeve; 206 is a base body; 207 is an attachment; 208 is a transfusion hose fixing seat; 209. 211 is a puncture hole; 210 is a locating cambered surface.
Detailed Description
The invention aims at providing a sternum infusion needle, which has the structural design that the requirements on the strength of operators can be reduced, and the use cost is reduced.
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 to fig. 4, fig. 1 is a schematic structural view of a firing assembly in a sternum infusion needle according to an embodiment of the invention, fig. 2 is a schematic structural view of a base assembly in a sternum infusion needle according to an embodiment of the invention, fig. 3 is a top view of a base main body in a sternum infusion needle according to an embodiment of the invention, and fig. 4 is a schematic structural view of a firing assembly in a sternum infusion needle according to an embodiment of the invention mated with the base assembly.
The sternum infusion needle provided by the embodiment of the invention comprises a firing assembly 100 and a base assembly 200.
The firing assembly 100 comprises a sleeve 102, a firing shaft 101, an energy storage mechanism 107 and a triggering mechanism, wherein one end of the firing shaft 101 penetrates through the closed end of the sleeve 102 to extend into the inner cavity of the sleeve 102, the firing shaft 101 is in sliding fit with the sleeve 102, the energy storage mechanism 107 is arranged between one end of the firing shaft 101 extending into the inner cavity of the sleeve 102 and the sleeve 102, the triggering mechanism comprises a firing baffle 108 and a triggering disc 110, the firing baffle 108 is arranged on one of the sleeve 102 and the firing shaft 101 in a telescopic manner through a resetting piece 109, the firing baffle 108 can extend out of the locking firing shaft 101 under the action of the resetting piece 109 to enable the energy storage mechanism 107 to be in an energy storage state, the triggering disc 110 is in sliding fit with the sleeve 102, and the triggering disc 110 can move along the opening end of the sleeve 102 towards the closed end to be in contact fit with the firing baffle 108 to enable the firing baffle 108 to retract to release the firing shaft 101; the base assembly 200 comprises a base body 206, a main needle 201 and a sub-needle assembly 204, wherein the base body 206 is used for being in sliding fit with the opening end of the sleeve 102, the tip end of the main needle 201 and the sub-needle assembly 204 are in sliding fit with the base body 206, the tail end of the main needle 201 is used for being matched with one end of the firing shaft 101 extending into the inner cavity of the sleeve 102, and the sub-needle assembly 204 can be in interference fit with the trigger disc 110 so that the trigger disc 110 can move towards the closed end along the opening end of the sleeve 102.
Compared with the prior art, when the sternum infusion needle provided by the invention is used, firstly, the sleeve 102 and the base main body 206 are assembled together, then the base is placed at the optimal sternum puncture position of a patient, at the moment, the firing baffle 108 in the trigger mechanism locks the firing shaft 101, the energy storage mechanism 107 is in an energy storage state, the sleeve 102 is pressed to enable the sleeve 102 to slide downwards relative to the base main body 206, the firing plate 110 is in contact fit with the auxiliary needle assembly 204, when the auxiliary needle assembly 204 moves downwards to the bone surface of the patient, force is continuously applied, the auxiliary needle assembly 204 forces the firing plate 110 to move upwards, meanwhile, the main needle 201 continues to move downwards relatively to reach the bone surface, the firing plate 110 is matched with the firing baffle 108 under the driving of the auxiliary needle assembly 204, the firing baffle 108 is retracted under the action of the overcoming the reset piece 109, the firing shaft 101 is released, and the energy storage mechanism 107 pushes the firing shaft 101 to drive the main needle 201 to move downwards to puncture the sternum; therefore, the sternum infusion needle is provided with the elastic energy storage mechanism 107, the puncture process is completed by the elastic energy storage mechanism 107, an operator only needs to press down to enable the trigger mechanism to release the firing shaft 101, so that the requirements of the sternum puncture on the strength of the operator are greatly reduced, the strength is saved, the large-scale group injury can be dealt with, the firing assembly 100 can be reused by adopting a split structure in which the firing assembly 100 and the base assembly 200 are detachably connected, the waste is reduced, the use cost is reduced, and a rescuer only needs to carry one firing assembly 100 and a plurality of base assemblies 200, so that the emergency treatment can be carried out for a plurality of wounded persons, and the space can be saved when the base assembly 200 is carried relatively small.
As shown in FIG. 1, when the firing assembly 100 is not in use, the firing assembly protective cover 103 can be used to close the open end of the sleeve 102 of the firing assembly 100, ensuring that the interior of the handle assembly is free of contamination.
Preferably, the sternum infusion needle further comprises a quick-change assembly, the quick-change assembly is used for enabling the sleeve 102 to be connected with the auxiliary needle assembly 204 in a matched mode, as shown in fig. 5, the quick-change assembly comprises an annular clamping sleeve 113, the annular clamping sleeve 113 is arranged at the opening end of the sleeve 102, a plurality of spring pins 114 are arranged on one of the outer side wall of the auxiliary needle assembly 204 and the inner side wall of the annular clamping sleeve 113, pin grooves are formed in the other of the outer side wall of the auxiliary needle assembly 204 and the inner side wall of the annular clamping sleeve 113, the spring pins 114 and the pin grooves can be matched with each other to enable the quick-change assembly to be clamped with the auxiliary needle assembly 204, and therefore when the firing assembly 100 is lifted upwards after the main needle 201 is pierced, the sleeve 102 can lift the auxiliary needle assembly 204 together, and only the main needle 201 and the base main body 206 are left for infusion flow.
In the embodiment shown in fig. 5, the spring pin 114 includes a spring and a steel ball, a plurality of step holes are circumferentially arranged on the annular clamping sleeve 113, a large end opening of each step hole is located on the outer side wall of the annular clamping sleeve 113, a small end opening of each step hole is located on the inner side wall of the annular clamping sleeve 113, the steel ball is slidably arranged at a small end of each step hole, the diameter of the small end opening is smaller than that of the steel ball, an end cover is arranged in the large end of each step hole, and the end cover compresses the spring on the steel ball.
In order to avoid false triggering of the sternum infusion needle before all is ready, the sternum infusion needle in the embodiment of the invention further comprises a safety locking structure for locking the firing shaft 101 and the sleeve 102 relatively, the safety locking structure comprises a stop pin 104 arranged on one end of the firing shaft 101, which is positioned outside the sleeve 102, and a safety disc 106 rotatably arranged on the top of the sleeve 102, and an unlocking groove 105 is arranged on the safety disc 106 along the direction from the closed end to the open end of the sleeve 102, and the stop pin 104 can be matched with the unlocking groove 105 only when the safety disc 106 rotates by a preset angle so as to unlock the firing shaft 101 relative to the sleeve 102.
As shown in fig. 4, a first elastic member 111 is disposed between the trigger disc 110 and the sleeve 102, a second elastic member 112 is disposed at the open end of the sleeve 102 and is in contact with the base body 206, and by disposing the first elastic member 111 and the second elastic member 112, the damping feeling during operation of the operator can be increased, the operation state of the sternum infusion needle is fed back, and the operation feeling of the operator can be improved.
Preferably, a positioning cambered surface 210 is provided on the base main body 206, the positioning cambered surface 210 is attached to the sternum notch, as shown in fig. 3, two sides of the base main body 206 are symmetrically provided with positioning cambered surfaces 210, a puncture hole 209 for the main needle 201 to pass through is provided in the center of the base main body 206, the puncture hole 209 is located on an extension line of a tangent line of the lowest point of the positioning cambered surface 210, and the distance a between the lowest point of the positioning cambered surface 210 and the center of the puncture hole 209 is equal to the distance between the sternum notch and the thickest point of the sternum, when in use, the positioning cambered surface 210 on the side edge of the base main body 206 can be attached to the sternum notch, at this time, by utilizing the characteristic that the distance between the sternum notch and the thickest point of the sternum is certain, the puncture hole 209 is aligned with the thickest point of the sternum, so that a user can quickly and accurately find the puncture position, conveniently operate, and save time for treatment.
As shown in fig. 3, a puncture hole 211 through which the sub-needle assembly 204 passes is further provided around the puncture hole 209 in the base body 206.
The base body 206 is further provided with a groove for clamping the infusion hose 203, and the groove can be a U-shaped groove, an L-shaped groove or the like, so that the infusion hose 203 can be clamped and fixed in the groove during infusion, and the infusion hose 203 is prevented from being dragged.
Further, the bottom surface of the base body 206 is provided with an attachment piece 207 for fixing the base body 206 to the skin of the sternum, and the attachment piece 207 may be a double-sided tape or a suction cup as long as it can be attached to the skin of a patient to fix the base body 206.
As shown in fig. 3, the main needle 201 is externally sleeved with an infusion hose 203, and the main needle 201 is integrated with the infusion hose 203, and an infusion hose dust cap 202 is mounted on the upper portion of the infusion hose 203 so that the main needle 201 is in a closed sterile environment.
Further, the sternum infusion needle further comprises an infusion hose holder 208, with infusion hose holder 208 being used to secure infusion hose 203 to sub-needle assembly 204, with infusion hose 203 and the infusion needle passing through holes in sub-needle assembly 204.
In order to make the auxiliary needle assembly 204 be in a closed sterile environment, the auxiliary needle assembly 204 is mounted on the base main body 206 through the connecting sleeve 205, meanwhile, a circular boss is arranged at the center of the base main body 206, and a groove for accommodating the needle head of the auxiliary needle assembly 204 is arranged on the circular boss, so that the auxiliary needle assembly 204 is in a closed sterile environment, and the main needle 201 and the auxiliary needle assembly 204 are in a closed sterile state in the puncturing process, so that cross infection caused by exposure of needles is avoided.
Preferably, foolproof structures are provided between the connection sleeve 205 and the sub-needle assembly 204 and between the connection sleeve 205 and the base body 206 for easy assembly.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
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 (10)
1. A sternum infusion needle comprising:
The trigger assembly comprises a sleeve, a trigger shaft, an energy storage mechanism and a trigger mechanism, wherein one end of the trigger shaft penetrates through the closed end of the sleeve to extend into the inner cavity of the sleeve and is in sliding fit with the sleeve, the energy storage mechanism is arranged between one end of the trigger shaft extending into the inner cavity of the sleeve and the sleeve, the trigger mechanism comprises a trigger baffle and a trigger disc, the trigger baffle is arranged on one of the sleeve and the trigger shaft in a telescopic manner through a reset piece, the trigger baffle can extend out of the trigger shaft under the action of the reset piece to enable the energy storage mechanism to be in an energy storage state, the trigger disc is in sliding fit with the sleeve, and the trigger disc can move along the opening end of the sleeve towards the direction of the closed end to be in contact fit with the trigger baffle to enable the trigger baffle to retract so as to release the trigger shaft.
The base assembly comprises a base main body, a main needle and an auxiliary needle assembly, wherein the base main body is used for being in sliding fit with the open end of the sleeve, the tip of the main needle and the auxiliary needle assembly are in sliding fit with the base main body, the tail end of the main needle is used for being matched with one end of the firing shaft extending into the inner cavity of the sleeve, and the auxiliary needle assembly can be in abutting fit with the trigger disc so that the trigger disc moves towards the direction of the closed end along the open end of the sleeve.
2. The sternum infusion needle of claim 1, further comprising a quick-change assembly comprising an annular sleeve disposed at the open end of the sleeve, one of the outer side wall of the secondary needle assembly and the inner side wall of the annular sleeve being provided with a plurality of spring pins, the other of the outer side wall of the secondary needle assembly and the inner side wall of the annular sleeve being provided with pin slots, the spring pins and the pin slots being capable of cooperating with each other to enable the quick-change assembly to be snapped into engagement with the secondary needle assembly.
3. The sternum infusion needle of claim 1, further comprising a safety locking structure for locking the firing shaft relative to the sleeve, the safety locking structure comprising a stop pin disposed on one end of the firing shaft outside the sleeve and a safety disc rotatably disposed on the top of the sleeve, an unlocking slot being disposed on the safety disc in a direction from the closed end to the open end of the sleeve, the stop pin cooperating with the unlocking slot after the safety disc rotates by a preset angle to unlock the firing shaft relative to the sleeve.
4. A sternum infusion needle according to any one of claims 1-3, characterised in that a first resilient element is provided between the trigger disc and the sleeve.
5. A sternal infusion needle according to any one of claims 1-3, characterised in that the open end of the sleeve is provided with a second resilient element for contact engagement with the base body.
6. A sternum infusion needle according to any one of claims 1-3, characterised in that the base body is provided with a locating cambered surface which conforms to the sternum notch.
7. The sternal infusion needle of claim 6, where the bottom surface of the base body is provided with an attachment for securing the base body to the sternal skin.
8. The sternum infusion needle of any one of claims 1-3 and 7, where the main needle is sleeved with an infusion hose, and where an infusion hose dust cap is mounted on the upper portion of the infusion hose.
9. The sternum infusion needle of claim 8, further comprising an infusion hose holder for securing the infusion hose to the sub-needle assembly.
10. The sternum infusion needle of any one of claims 1-3, 7 and 9, where the secondary needle assembly is mounted to the base body by a connecting sleeve, and foolproof structures are provided between the connecting sleeve and the secondary needle assembly and between the connecting sleeve and the base body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911188512.4A CN110755140B (en) | 2019-11-28 | 2019-11-28 | Sternum transfusion needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911188512.4A CN110755140B (en) | 2019-11-28 | 2019-11-28 | Sternum transfusion needle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110755140A CN110755140A (en) | 2020-02-07 |
| CN110755140B true CN110755140B (en) | 2024-09-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911188512.4A Active CN110755140B (en) | 2019-11-28 | 2019-11-28 | Sternum transfusion needle |
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| Country | Link |
|---|---|
| CN (1) | CN110755140B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211325444U (en) * | 2019-11-28 | 2020-08-25 | 搏时（北京）医疗科技有限公司 | Breastbone infusion needle |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6761726B1 (en) * | 1998-05-15 | 2004-07-13 | Pyng Medical Corp. | Method and apparatus for the intraosseous introduction of a device such as an infusion tube |
| WO2005112800A2 (en) * | 2004-05-17 | 2005-12-01 | Tiax Llc | Intraosseous infusion device |
| IL212263A (en) * | 2011-04-11 | 2014-01-30 | Alexander Kalnitskiy | Intraosseous device for inserting a cannula into a bone |
| CN103156621B (en) * | 2013-03-18 | 2014-09-17 | 苏州施莱医疗器械有限公司 | Improved safe blood-sampling pen |
| US11324897B2 (en) * | 2015-08-31 | 2022-05-10 | Pyng Medical Corp. | Intraosseous injection device |
| CN208371864U (en) * | 2018-02-07 | 2019-01-15 | 宁波越凡医疗科技有限公司 | A kind of intraosseous infusion sting device |
| CN109223141B (en) * | 2018-11-29 | 2020-09-11 | 中国人民解放军陆军特色医学中心 | Marrow transfusion gun |
-
2019
- 2019-11-28 CN CN201911188512.4A patent/CN110755140B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211325444U (en) * | 2019-11-28 | 2020-08-25 | 搏时（北京）医疗科技有限公司 | Breastbone infusion needle |
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| CN110755140A (en) | 2020-02-07 |
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