CN116726307A - Remaining needle device - Google Patents
Remaining needle device Download PDFInfo
- Publication number
- CN116726307A CN116726307A CN202310561275.1A CN202310561275A CN116726307A CN 116726307 A CN116726307 A CN 116726307A CN 202310561275 A CN202310561275 A CN 202310561275A CN 116726307 A CN116726307 A CN 116726307A
- Authority
- CN
- China
- Prior art keywords
- needle
- safety mechanism
- slider
- base
- indwelling
- 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.)
- Granted
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 72
- 210000000078 claw Anatomy 0.000 claims description 16
- 238000001802 infusion Methods 0.000 claims description 8
- 230000009471 action Effects 0.000 claims description 6
- 230000003213 activating effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 10
- 230000003139 buffering effect Effects 0.000 abstract description 2
- 238000002513 implantation Methods 0.000 description 4
- NOESYZHRGYRDHS-UHFFFAOYSA-N insulin Chemical compound N1C(=O)C(NC(=O)C(CCC(N)=O)NC(=O)C(CCC(O)=O)NC(=O)C(C(C)C)NC(=O)C(NC(=O)CN)C(C)CC)CSSCC(C(NC(CO)C(=O)NC(CC(C)C)C(=O)NC(CC=2C=CC(O)=CC=2)C(=O)NC(CCC(N)=O)C(=O)NC(CC(C)C)C(=O)NC(CCC(O)=O)C(=O)NC(CC(N)=O)C(=O)NC(CC=2C=CC(O)=CC=2)C(=O)NC(CSSCC(NC(=O)C(C(C)C)NC(=O)C(CC(C)C)NC(=O)C(CC=2C=CC(O)=CC=2)NC(=O)C(CC(C)C)NC(=O)C(C)NC(=O)C(CCC(O)=O)NC(=O)C(C(C)C)NC(=O)C(CC(C)C)NC(=O)C(CC=2NC=NC=2)NC(=O)C(CO)NC(=O)CNC2=O)C(=O)NCC(=O)NC(CCC(O)=O)C(=O)NC(CCCNC(N)=N)C(=O)NCC(=O)NC(CC=3C=CC=CC=3)C(=O)NC(CC=3C=CC=CC=3)C(=O)NC(CC=3C=CC(O)=CC=3)C(=O)NC(C(C)O)C(=O)N3C(CCC3)C(=O)NC(CCCCN)C(=O)NC(C)C(O)=O)C(=O)NC(CC(N)=O)C(O)=O)=O)NC(=O)C(C(C)CC)NC(=O)C(CO)NC(=O)C(C(C)O)NC(=O)C1CSSCC2NC(=O)C(CC(C)C)NC(=O)C(NC(=O)C(CCC(N)=O)NC(=O)C(CC(N)=O)NC(=O)C(NC(=O)C(N)CC=1C=CC=CC=1)C(C)C)CC1=CN=CN1 NOESYZHRGYRDHS-UHFFFAOYSA-N 0.000 description 4
- 230000014759 maintenance of location Effects 0.000 description 3
- 230000001960 triggered effect Effects 0.000 description 3
- 102000004877 Insulin Human genes 0.000 description 2
- 108090001061 Insulin Proteins 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000007943 implant Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 229940125396 insulin Drugs 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000968 medical method and process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 230000003068 static effect Effects 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
- 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
-
- 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
- A61M5/142—Pressure infusion, e.g. using pumps
- A61M5/14244—Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body
- A61M5/14248—Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body of the skin patch type
-
- 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
- A61M5/142—Pressure infusion, e.g. using pumps
- A61M5/14244—Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body
- A61M5/14248—Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body of the skin patch type
- A61M2005/14252—Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body of the skin patch type with needle insertion means
-
- 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
- A61M5/142—Pressure infusion, e.g. using pumps
- A61M5/14244—Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body
- A61M2005/14268—Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body with a reusable and a disposable component
-
- 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
- A61M2005/1583—Needle extractors
-
- 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
- A61M2005/1585—Needle inserters
-
- 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
- A61M2005/1586—Holding accessories for holding infusion needles on the body
-
- 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
- A61M2005/1587—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body suitable for being connected to an infusion line after insertion into a patient
Landscapes
- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Dermatology (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The application relates to the field of medical equipment, in particular to an indwelling needle device, which comprises a needle aid, a puncture assembly and an indwelling needle assembly, wherein the needle aid is provided with a first safety mechanism and a second safety mechanism, a first elastic piece is arranged between a first sliding block and a shell, a second elastic piece is arranged between a second sliding block and the shell, the puncture assembly is provided with a third safety mechanism, the third safety mechanism can be unlocked to complete automatic needle pulling after unlocking the first safety mechanism and the second safety mechanism, and the arranged first elastic mechanism and the second elastic mechanism can play a role of buffering; by the protection of the triple safety mechanism, the automatic needle drawing device can prevent the problem of early needle drawing in the process of completing automatic needle drawing, and the buffer of the elastic piece enables a patient to have small stress feeling in the process of operation, so that the operation physical examination is good.
Description
Technical Field
The application relates to the field of medical instruments, in particular to an indwelling needle device.
Background
In the current clinical treatment, continuous timing and quantitative administration is needed to be carried out on patients in the treatment process of some diseases, for example, insulin needs to be injected into patients at fixed time and fixed quantity when treating diabetics, the existing insulin infusion indwelling needle has a plurality of structure types and mainly comprises a manual needle pulling structure and an automatic needle pulling structure, wherein the manual needle pulling structure is characterized in that after the injection is completed, a puncture steel needle is manually pulled out of an indwelling hose and a human body after a needle aid is removed, the operation is inconvenient, secondary injury and medical pollution are easily caused by the puncture steel needle exposed outside, and the existing automatic needle pulling structure has the problems that a needle pulling mechanism is triggered in the injection process, the reliability is poor, accidents are easily caused and the like.
As another example, citation 1: CN113663164a, this automatic needle pulling device is provided with triple insurance structure in order to ensure that automatic needle pulling mechanism can not be triggered in advance, but the device is rigid connection at the stress structure in it of pressing process, patient's atress sensation is obvious in pressing process, simultaneously because first insurance structure and second insurance structure are all triggered through buckling position's deformation, buckling position deformation can be incomplete in the in-service use, thereby lead to medical staff to need with very big strength just can accomplish the unblock of insurance structure, aggravate patient's atress like this, make patient's medical process experience very poor.
Disclosure of Invention
In order to solve the problems of inconvenient operation, poor reliability of automatic needle pulling and large stress in the medical treatment process of a patient, the application provides an indwelling needle device, which adopts the following technical scheme:
an indwelling needle device comprises a needle aid, a puncture assembly and an indwelling needle assembly which are assembled and matched for use; the needle aid comprises: the trigger piece is fixedly connected to the shell, and the first sliding block, the second sliding block and the third sliding block are coaxially arranged and can slide relative to the shell; a first elastic piece is arranged between the first sliding block and the shell, a second elastic piece is arranged between the second sliding block and the shell, a first safety mechanism is arranged on the first sliding block, and a second safety mechanism is arranged on the shell; the puncture assembly comprises a base, a needle seat and a starting key, wherein the needle seat and the starting key are coaxially arranged in the base and can move relative to the base, a puncture needle is fixedly connected to the needle seat, a third elastic piece is arranged between the needle seat and the base, and a third safety mechanism is arranged on the needle seat and the base; the indwelling needle assembly comprises an indwelling hose and an infusion port; the third sliding block is driven to slide upwards relative to the shell together after being stressed; the second slider slides upwards to push the first slider and then unlocks the first safety mechanism, the third slider slides upwards to press the second safety mechanism and then unlocks the second safety mechanism, after the first safety mechanism and the second safety mechanism are unlocked, the trigger piece is close to and presses the puncture assembly and unlocks the third safety mechanism to complete automatic needle drawing.
Further, the second safety mechanism is a limiting claw fixedly connected to the shell, when the limiting claw is abutted to the base, the base and the shell synchronously move, and the trigger piece is static relative to the puncture assembly; when the limiting claw and the base are separated, the puncture assembly and the shell move relatively, and the trigger piece can move close to and press the starting key.
Further, a first unlocking piece is fixedly connected to the third sliding block, and moves along with the third sliding block to be close to and in compression joint with the limiting claw so as to drive the limiting claw and the puncture assembly to be separated.
Further, the first safety mechanism is an annular ruffle arranged on the first sliding block, and the annular ruffle can move along with the first sliding block to be close to the limiting claw so as to limit the limiting claw to abut against the puncture assembly or to be far away from the limiting claw so as to release the limitation.
Further, the shell comprises a shell and an upper cover fixedly connected to the shell, the trigger piece penetrates through the first sliding block and then is fixedly connected to the upper cover to limit the first sliding block, the first sliding block slides on the trigger piece, and the first sliding block can be close to and limit the limiting claw to be abutted to the puncture assembly.
Further, the first elastic piece is located between the upper cover and the first sliding block, and the first sliding block is acted by the first elastic piece to have a tendency to slide close to the limiting claw.
Further, the third safety mechanism comprises a straight groove, a chute and a second unlocking piece, wherein the straight groove is axially arranged along the base, and one end of the chute is communicated with the straight groove and is intersected with the axial different surface of the base; the second unlocking piece is fixedly connected to the needle seat and moves in the straight groove and the inclined groove; when the second unlocking piece is positioned in the chute, the needle seat compresses the third elastic piece to be close to the bottom surface of the base.
Further, the upper end of the needle seat is provided with an inclined plane, the needle seat 220 is provided with a relief groove at the tail end of the inclined plane, the start button is in press connection with the inclined plane to drive the needle seat to slide downwards and rotate along the chute at the same time, the second unlocking piece enters the straight groove from the chute, at the moment, the third safety mechanism is unlocked, the start button slides into the relief groove from the inclined plane, and the needle seat is far away from the bottom surface of the base under the action of the third elastic piece to complete automatic needle pulling action.
Further, the starting key is fixedly connected with a pressing rod and a protruding block, and the pressing rod is pressed against the inclined plane to unlock the third safety mechanism; the base is provided with a limit groove along the axial direction, and the protruding block moves in the limit groove to limit the travel of the starting key.
Further, a breaking block is further arranged in the limiting groove, the limiting groove is divided into an upper area and a lower area by the breaking block, the protruding block is located in the upper area in a normal state, and after the trigger piece is pressed against the starting key, the breaking block is broken by the protruding block and moves to the lower area.
The application has the beneficial effects that:
the needle assisting device comprises a needle assisting device, a puncture assembly and a needle retaining assembly which are assembled and matched for use, wherein the needle assisting device is provided with a first safety mechanism and a second safety mechanism, the puncture assembly is provided with a third safety mechanism, the second safety mechanism can be continuously unlocked only after the first safety mechanism is unlocked in the use process, and the third safety mechanism can be unlocked only after the first safety mechanism and the second safety mechanism are unlocked so as to trigger automatic needle drawing; through the protection of the triple safety mechanism, the automatic needle pulling during the operation can be completed, and the needle pulling in advance during the implantation of the indwelling needle can be prevented.
Be provided with first elastic component between first slider and the casing on helping the needle ware, be provided with the second elastic component between second slider and the casing, when medical staff will keep somewhere the needle device and place on the patient implants regional skin and press puncture device, because there is the buffering of elastic component, so can slow down patient's atress, improve patient's implantation experience.
The first safety mechanism on the needle aid is unlocked through the second sliding block, the second safety mechanism is unlocked through the third sliding block, and therefore unlocking of the safety mechanism is completed through cooperation between different mechanisms, the needle aid is accurate and labor-saving, and medical staff can smoothly complete unlocking without applying great force.
Drawings
The application will be further described with reference to the accompanying drawings and specific examples, in which:
FIG. 1 is an exploded view of the indwelling needle device of the present application;
FIG. 2 is a cross-sectional view of an indwelling needle device according to the present application;
FIG. 3 is a cross-sectional view of the needle aid of the present application;
FIG. 4 is an exploded view of the needle aid of the present application;
FIG. 5 is a cross-sectional exploded view of the needle aid of the present application;
FIG. 6 is a three-dimensional exploded view of the needle aid of the present application;
FIG. 7 is a second three-dimensional exploded view of the needle assist device of the present application;
FIG. 8 is a perspective view of a third slider of the present application;
FIG. 9 is a cross-sectional view of the lancet assembly of the present application;
FIG. 10 is an exploded view of the lancet assembly of the present application;
FIG. 11 is a three-dimensional exploded view of the lancet assembly of the present application;
fig. 12 is a top view of the indwelling needle assembly of the present application.
Drawing number marks:
100. a needle aid;
101. a housing; 110. an upper cover; 111. fixing the column; 112. a stop block;
120. a first elastic member;
130. a first slider; 131. a circular hem; 132. a third guide groove;
140. a trigger; 141. a third guide bar;
150. a second elastic member;
160. a second slider; 161. a hook; 162. a first guide groove;
170. a housing; 171. a limit claw; 1711. a head; 1712. a body; 172. a first guide bar; 173. a second guide bar;
180. a third slider; 181. a first unlocking member; 182. a clamping groove; 183. a second guide groove; 184. a notch;
200. a puncture assembly;
210. starting a key; 211. a bump; 212. a compression bar;
220. a needle stand; 221. an inclined plane; 222. a relief groove; 223. a second unlocking member; 224. a puncture needle;
230. a third elastic member;
240. a base; 241. a limit groove; 242. breaking the block; 243. a straight groove; 244. a chute; 245. an alignment seat; 246. alignment protrusions; 247. a puncture guide;
300. an indwelling needle assembly; 301. a baffle; 302. an infusion port; 303. an alignment port; 304. and (5) retaining the hose.
Detailed Description
For a better understanding of the objects, structure and function of the application, an indwelling needle device according to the present application will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1-11, an indwelling needle device of the present application includes a detachable, assembled needle aid 100 for use with a puncture assembly 200, an indwelling needle assembly 300; the three are coaxially penetrated together to complete the assembly, and the remaining needle assembly 300 is arranged at the lower end of the puncture assembly 200 and then is arranged in the needle aid 100.
The needle aid 100 comprises a shell 101, a trigger piece 140 fixedly connected to the shell 101, a first sliding block 130, a second sliding block 160 and a third sliding block 180, wherein the first sliding block 130, the second sliding block 160 and the third sliding block 180 are coaxially arranged and can slide relative to the shell 101; the shell 101 comprises a shell 170 and an upper cover 110 fixedly connected to the shell 170 in a buckling manner, a fixed column 111 is fixedly connected to the upper cover 110, the trigger piece 140 is fixedly sleeved on the fixed column 111 to increase stability, and the first sliding block 130 is arranged on the trigger piece 140 in a penetrating manner and can slide on the trigger piece 140; a first elastic member 120 is provided between the upper cover 110 and the first slider 130, and a second elastic member 150 is provided between the upper cover 110 and the second slider 160; the first slider 130 is provided with a first safety mechanism, and the housing 170 is provided with a second safety mechanism.
The puncture assembly 200 comprises a base 240, a needle seat 220 and a starting key 210, wherein the base 240 is of a hollow barrel-shaped design, the needle seat 220 and the starting key 210 are coaxially arranged in the base 240, the starting key 210 is positioned right above the needle seat 220, the starting key 210 can slide relative to the base 240, and the needle seat 220 can slide and rotate relative to the base 240; the needle stand 220 is coaxially and fixedly connected with a puncture needle 224, and the puncture needle 224 penetrates through the bottom of the base 240 and moves relative to the base 240 along with the needle stand 220; a third safety mechanism is provided on the needle holder 220 and the base 240, and a third elastic member 230 is provided between the needle holder 220 and the bottom surface of the base 240.
The indwelling needle assembly 300 includes an indwelling hose 304 and an infusion port 302, the puncture needle 224 penetrates the skin of the patient after passing through the indwelling hose 304, the indwelling hose 304 is implanted subcutaneously in the patient, the infusion port 302 communicates with the indwelling hose 304, and the medical staff infuses external liquid medicine into the patient through the infusion port 302.
When the needle aid 100, the puncture assembly 200 and the indwelling needle assembly 300 are assembled, the puncture needle 224 passes through the indwelling hose 304, the puncture assembly 200 and the indwelling needle assembly 300 are both positioned in the needle aid 100, the device is placed on the skin of a patient at an implantation position, the lower end of the third slider 180 is in contact with the skin, medical staff presses the upper cover 110, the shell 101 moves downwards to be close to the skin, the third slider 180 drives the second slider 160 to slide upwards together relative to the shell 101, the puncture assembly 200 and the indwelling needle assembly 300 move along with the shell 101 to be close to the skin, and then the puncture needle 224 drives the indwelling hose 304 to puncture and implant the skin together; the second slider 160 pushes the first slider 130 to unlock the first safety mechanism in the process of sliding upwards, then the third slider 180 presses the second safety mechanism and unlocks the second safety mechanism in the process of sliding upwards, when both the first safety mechanism and the second safety mechanism are unlocked, the casing 101 slides relative to the puncture assembly 200 and approaches the puncture assembly 200, the trigger 140 presses the start button 210 to unlock the third safety mechanism, and then the third elastic member 230 drives the needle holder 220 to drive the puncture needle 224 to retract to complete the automatic needle pulling action.
With further reference to fig. 3-8, the third slider 180 is provided with a second guide groove 183 in a radial direction, the housing 170 is fixedly connected with a second guide bar 173 in a radial direction, and the second guide groove 183 and the second guide bar 173 cooperate so that the third slider 180 slides relative to the housing 170; the second slider 160 is provided with a first guide groove 162 along the radial direction, the housing 170 is fixedly connected with a first guide bar 172 along the radial direction, and the first guide groove 162 and the first guide bar 172 are matched so that the second slider 160 slides relative to the housing 170; the lower end of the second slider 160 is provided with a clamping hook 161, the third slider 180 is provided with a clamping groove 182, and the second slider 160 is coordinated with the clamping groove 182 through the clamping hook 161 to be connected with the third slider 180.
Further, the second safety mechanism is a limiting jaw 171 fixedly connected to the housing 101, the limiting jaw 171 includes a head 1711 and a body 1712, one end of the body 1712 is fixedly connected to the housing 170, the other end of the body 1712 is fixedly connected with the head 1711, the head 1711 is bent inwards relative to the body 1712, the head 1711 is abutted to the base 240 of the puncture assembly 200 in a normal state, the puncture assembly 200 is limited by the limiting jaw 171 and moves downwards along with the housing 170, and when the body 1712 is stressed, elastic deformation occurs and drives the head 1711 to move away from the base 240, and the puncture assembly 200 is not limited by the limiting jaw 171 and moves upwards relative to the housing 170; the third slider 180 is fixedly connected with a first unlocking member 181, the first unlocking member 181 may be in a protruding block shape or a column shape, and the first unlocking member 181 moves upward along with the third slider 180 and is in press connection with the body 1712 of the limiting jaw 171, so as to drive the head 1711 to be far away from the puncture assembly 200, and unlock the second safety structure.
Further, the first safety mechanism is an annular ruffle 131 disposed at the lower end of the first slider 130, a third guide groove 132 is disposed on the first slider 130 along the radial direction, a third guide bar 141 is disposed on the trigger member 140 along the radial direction, the third guide groove 132 and the third guide bar 141 cooperate to facilitate sliding of the first slider 130 on the trigger member 140, and when the first slider 130 slides on the trigger member 140 to a position close to the limit claw 171, the annular ruffle 131 covers the head 1711 to limit the head 1711 from being far away from the base 240; when the first slider 130 slides on the trigger 140 away from the limit jaw 171, the annular hem 131 moves away from the head 1711 and releases the restriction on the head 1711, the head 1711 may be urged away from the spike assembly 200; the first elastic member 120 provided between the upper cover 110 and the first slider 130 is preferably a spring, and the first elastic member 120 drives the first slider 130 to slide on the trigger member 140 to a position close to the limit claw 171; the connection between the body 1712 of the limit pawl 171 and the housing 170 is located between the second slider 160 and the third slider 180 and limits the travel of the second slider 160 and the third slider 180; the second elastic member 150 is preferably a spring and is arranged between the upper cover 110 and the second sliding block 160, and a stop block 112 is further arranged on the shell 101 to stabilize the second elastic member 150, wherein the second elastic member 150 drives the second sliding block 160 to fall at the lowest end of the travel of the second sliding block 160; the second slider 160 compresses the second elastic member 150 and slides upward relative to the housing 101 after being acted by the third slider 180, and then pushes the first slider 130 to slide on the trigger member 140 and compress the first elastic member 120 to be away from the limiting claw 171, so as to unlock the first safety mechanism.
Further, the second safety mechanism can be unlocked only after the first safety mechanism is unlocked, and the third safety mechanism can be unlocked only after the first safety mechanism and the second safety mechanism are both unlocked.
9-11, the third safety mechanism comprises a straight groove 243, a chute 244 and a second unlocking piece 223, wherein the straight groove 243 is axially arranged along the base 240, one end of the chute 244 is communicated with the straight groove 243 and intersects with the axial different surface of the base 240, the second unlocking piece 223 is fixedly connected on the needle seat 240 and moves in the straight groove 243 and the chute 244, and the second unlocking piece 223 is in a protruding column shape; the third elastic member 230 is preferably a spring disposed between the needle holder 220 and the bottom surface of the base 240, and the third elastic member 230 urges the needle holder 220 away from the bottom surface of the base 240; when the second unlocking piece 223 is positioned in the chute 244, the needle seat 220 compresses the third elastic piece 230 and is positioned at the bottom surface of the base 240; the upper end of the needle seat 220 is provided with an inclined plane 221, the tail end along the downward direction of the inclined plane 221 is provided with a yielding groove 222, the start button 210 is in press connection with the inclined plane 221 to drive the needle seat 220 to slide downwards and rotate along the inclined slot 244, the start button 210 slides into the yielding groove 222 from the inclined plane 221, the second unlocking piece 223 enters the straight slot 243 from the inclined slot 244 to unlock the third safety mechanism, and the needle seat 220 is driven by the third elastic piece 230 to retract the puncture needle 224 to finish the automatic needle pulling action.
Further, the starting button 210 is fixedly connected with a pressing rod 212 and a protruding block 211, and the pressing rod 212 is pressed against the inclined surface 221 to unlock the third safety mechanism; the base 240 is provided with a limit groove 241 along the axial direction, and the protruding block 211 moves in the limit groove 241 to limit the travel of the start button 210; the limiting groove 241 is also internally provided with a breaking block 242, the breaking block 242 divides the limiting groove 241 into an upper area and a lower area, the normal lower protruding block 211 is positioned in the upper area, after the trigger piece 140 is pressed against the starting key 210, the starting key 210 drives the protruding block 211 to break the breaking block 242 to move to the lower area, meanwhile, the pressing rod 212 is pressed against the inclined plane 221 to slide into the yielding groove 222 at the tail end of the inclined plane 221 and drives the second unlocking piece 223 to enter the straight groove 243 from the chute 244, and the third safety mechanism is unlocked to complete the automatic needle pulling action; the design of the breaking block 242 provides restraining force to the actuation button 210 and also makes the spike assembly 200 a single-use device preventing the needle from being reused.
With further reference to fig. 11 and 12, a puncture guide 247 is coaxially provided at the bottom end of the base 240 to guide the puncture needle 224 to stably pass through the indwelling hose of the base 240; the bottom end of the bottom 240 is fixedly connected with an alignment seat 245 and an alignment bulge 246, an alignment port 303 is arranged on the retention needle assembly, the retention needle assembly 300 is assembled in the alignment seat 245 to be assembled with the puncture assembly 200, and the alignment bulge 246 and the alignment port 303 are matched to facilitate the alignment of the puncture assembly 200 and the retention needle assembly 300; the third slider 180 is further provided with a notch 184 on the side wall, the edge of the remaining needle assembly 300 is provided with a baffle 301, the baffle 301 extends out of the third slider 180, when the remaining needle assembly 300 is rotated into the needle aid 100, the baffle 302 is coordinated into the notch 184, and when the housing 170 is pressed down, the housing abuts against the baffle 301 and drives the remaining needle assembly 300 to be adhered to the skin of a patient so as to complete implantation.
It will be understood that the application has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the application. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the application without departing from the essential scope thereof. Therefore, it is intended that the application not be limited to the particular embodiment disclosed, but that the application will include all embodiments falling within the scope of the appended claims.
Claims (10)
1. An indwelling needle device, which is characterized by comprising a needle aid (100), a puncture assembly (200) and an indwelling needle assembly (300) which are assembled and matched;
the needle aid (100) comprises: the device comprises a shell (101), a trigger piece (140), a first sliding block (130), a second sliding block (160) and a third sliding block (180), wherein the trigger piece (140), the first sliding block (130), the second sliding block (160) and the third sliding block (180) are fixedly connected to the shell (101), are coaxially arranged, and can slide relative to the shell (101); a first elastic piece (120) is arranged between the first sliding block (130) and the shell (101), a second elastic piece (150) is arranged between the second sliding block (160) and the shell (101), a first safety mechanism is arranged on the first sliding block (130), and a second safety mechanism is arranged on the shell (101);
the puncture assembly (200) comprises a base (240), a needle seat (220) and a starting key (210), wherein the needle seat (220) and the starting key (210) are coaxially arranged in the base (240) and can move relative to the base (240), a puncture needle (224) is fixedly connected to the needle seat (220), a third elastic piece (230) is arranged between the needle seat (220) and the base (240) in a compressed mode, the third elastic piece (230) can drive the needle seat (220) to drive the puncture needle (224) to retract, and a third safety mechanism is arranged on the needle seat (220) and the base (240);
the indwelling needle assembly (300) comprises an indwelling hose (304) and an infusion port (302), the puncture needle (224) penetrates through the indwelling hose (304), and the infusion port (302) is communicated with the indwelling hose (304);
the third slider (180) drives the second slider (160) to slide upwards relative to the shell (101) after being stressed, so as to push the first slider (130) to move and unlock the first safety mechanism, the third slider (180) continues to slide upwards to press and unlock the second safety mechanism, after the first safety mechanism and the second safety mechanism are unlocked, the trigger piece (140) is close to and presses the puncture assembly (200), so that the third safety mechanism is unlocked, and the third elastic piece (230) drives the needle seat (220) to drive the puncture needle (224) to retract.
2. The indwelling needle device according to claim 1, wherein the second safety mechanism is a limiting jaw (171) fixedly connected to the housing (101), one end of the limiting jaw (171) is fixedly connected to the housing (101), the other end of the limiting jaw extends along a moving path of the puncture assembly (200), when the limiting jaw (171) abuts against the base (240), the base (240) and the housing (101) synchronously move, and the trigger piece (140) is stationary relative to the puncture assembly (200); when the limiting claw (171) and the base (240) are separated, the puncture assembly (200) and the shell (101) move relatively, and the trigger piece (140) can move close to and press the starting key (210).
3. The indwelling needle device according to claim 2, wherein a first unlocking member (181) is fixedly connected to the third slider (180), and the first unlocking member (181) moves along with the third slider (180) to be close to and press-connected with the limiting jaw (171) so as to drive the limiting jaw (171) and the puncture assembly (200) to be separated.
4. A needle indwelling device according to claim 3, in which the first safety mechanism is an annular hem (131) provided on the first slider (130), the annular hem (131) being movable with the first slider (130) closer to the limit jaw (171) to limit the limit jaw (171) against the puncture assembly (200) or farther from the limit jaw (171) to release the limit.
5. The indwelling needle device according to claim 4, wherein the housing (101) comprises a casing (170) and an upper cover (110) fixedly connected to the casing (170), the triggering member (140) passes through the first slider (130) and is fixedly connected to the upper cover (110) so as to limit the first slider (130), and the first slider (130) can slide on the triggering member (140) to be close to or far from the limiting claw (171).
6. An indwelling needle device according to claim 5, in which the first resilient member (120) is located between the upper cover (110) and the first slider (130), the first slider (130) having a tendency to slide closer to the limiting jaw (171) under the action of the first resilient member (120).
7. The indwelling needle device according to claim 1, wherein said third safety mechanism comprises a straight groove (243), a chute (244) and a second unlocking member (223), said straight groove (243) being axially disposed along said base (240), said chute (244) communicating at one end with said straight groove (243) and intersecting with an axially different face of said base (240); the second unlocking piece (223) is fixedly connected to the needle seat (220) and moves in the straight groove (243) and the chute (244); when the second unlocking piece (223) is positioned in the chute (244), the needle seat (220) compresses the third elastic piece (230) to be close to the bottom surface of the base (240).
8. The indwelling needle device according to claim 7, wherein an inclined plane (221) is provided at the upper end of the needle holder (220), a yielding groove (222) is provided at the end of the inclined plane (221) on the needle holder (220), the starting button (210) is pressed against the inclined plane (221) to drive the needle holder (220) to slide downwards and rotate along the chute (244), the second unlocking piece (223) enters the straight groove (243) from the chute (244), at this time, the third safety mechanism is unlocked, the starting button (210) slides into the yielding groove (222) from the inclined plane (221), and the needle holder (220) is driven to retract by the third elastic piece (230).
9. The indwelling needle device according to claim 8, wherein the activating key (210) is fixedly connected with a pressing rod (212) and a bump (211), and the pressing rod (212) is in press connection with and pushes the inclined surface (221) to unlock the third safety mechanism; the base (240) is provided with a limit groove (241) along the axial direction, and the protruding block (211) moves in the limit groove (241) to limit the stroke of the starting key (210).
10. The indwelling needle device according to claim 9, wherein a breaking block (242) is further arranged in the limiting groove (241), the breaking block (242) divides the limiting groove (241) into an upper area and a lower area, the bump (211) is located in the upper area in a normal state, and after the triggering piece (140) is pressed against the starting button (210), the bump (211) breaks the breaking block (242) to move to the lower area.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310561275.1A CN116726307B (en) | 2023-05-17 | 2023-05-17 | Remaining needle device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310561275.1A CN116726307B (en) | 2023-05-17 | 2023-05-17 | Remaining needle device |
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| CN116726307A true CN116726307A (en) | 2023-09-12 |
| CN116726307B CN116726307B (en) | 2023-12-05 |
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| CN115804889A (en) * | 2022-12-30 | 2023-03-17 | 宁波睿爱产品设计有限公司 | Needle storage assisting device |
| CN219783377U (en) * | 2023-05-17 | 2023-10-03 | 普林斯顿医疗科技（珠海）有限公司 | Needle aid |
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| US20100049129A1 (en) * | 2008-08-20 | 2010-02-25 | Hiroyuki Yokoi | Inserter |
| CN110585512A (en) * | 2019-10-08 | 2019-12-20 | 刘靖宇 | Emitter of retention type subcutaneous infusion apparatus and retention type subcutaneous infusion apparatus |
| WO2021088544A1 (en) * | 2019-11-05 | 2021-05-14 | 微泰医疗器械(杭州)有限公司 | Needle-assisting device and medical system comprising same |
| JP2021083695A (en) * | 2019-11-27 | 2021-06-03 | ニプロ株式会社 | Puncture instrument |
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| CN217138851U (en) * | 2021-12-30 | 2022-08-09 | 微泰医疗器械(杭州)股份有限公司 | Reusable needle assisting device |
| CN217091656U (en) * | 2021-12-31 | 2022-08-02 | 无锡顶点医疗器械有限公司 | Automatic rebound type remaining needle assisting device |
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| CN219783377U (en) * | 2023-05-17 | 2023-10-03 | 普林斯顿医疗科技（珠海）有限公司 | Needle aid |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116726307B (en) | 2023-12-05 |
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Effective date of registration: 20240704 Address after: Unit 9-A, building 4, Zhuhai Zhongdian hi tech Industrial Park, No.1, Keji 7th Road, Tangjiawan Town, high tech Zone, Zhuhai, Guangdong 519000 Patentee after: PRINCETON MEDICAL TECHNOLOGY (ZHUHAI) Co.,Ltd. Country or region after: China Patentee after: Hengsheng medical Polytron Technologies Inc. Address before: Unit 9-A, building 4, Zhuhai Zhongdian hi tech Industrial Park, No.1, Keji 7th Road, Tangjiawan Town, high tech Zone, Zhuhai, Guangdong 519000 Patentee before: PRINCETON MEDICAL TECHNOLOGY (ZHUHAI) Co.,Ltd. Country or region before: China |