CN110075389B - Multifunctional indwelling needle - Google Patents
Multifunctional indwelling needle Download PDFInfo
- Publication number
- CN110075389B CN110075389B CN201910496405.1A CN201910496405A CN110075389B CN 110075389 B CN110075389 B CN 110075389B CN 201910496405 A CN201910496405 A CN 201910496405A CN 110075389 B CN110075389 B CN 110075389B
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- sleeve
- inner sleeve
- needle
- seat
- puncture needle
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- 206010011985 Decubitus ulcer Diseases 0.000 claims abstract description 9
- 208000004210 Pressure Ulcer Diseases 0.000 claims abstract description 9
- 230000000670 limiting effect Effects 0.000 claims description 25
- 239000012528 membrane Substances 0.000 claims description 5
- 230000002265 prevention Effects 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 239000008280 blood Substances 0.000 description 12
- 210000004369 blood Anatomy 0.000 description 12
- 230000002829 reductive effect Effects 0.000 description 8
- 230000007704 transition Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000036961 partial effect Effects 0.000 description 6
- 210000004204 blood vessel Anatomy 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000001802 infusion Methods 0.000 description 4
- 230000014759 maintenance of location Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000001467 acupuncture Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 210000003462 vein Anatomy 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 208000035049 Blood-Borne Infections Diseases 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal 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
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000007779 soft material 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
- 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
- A61M5/46—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 having means for controlling depth of insertion
-
- 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
- A61M2005/1588—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body having means for monitoring, controlling or visual inspection, e.g. for patency check, avoiding extravasation
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)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
A novel multifunctional indwelling needle comprises a hose seat, wherein a soft cushion piece for preventing pressure sores is arranged on the hose seat, an anti-needling component is arranged at the bottom end of the hose seat, and an indication structure for judging the needle withdrawing distance is arranged on the anti-needling component; the bottom of the soft gasket is provided with a plurality of grooves which are arranged at intervals; the anti-needling assembly comprises an inner sleeve, a middle sleeve capable of moving along the outer wall of the inner sleeve is sleeved outside the inner sleeve, an outer sleeve capable of moving along the outer wall of the middle sleeve is sleeved outside the middle sleeve, the inner sleeve is connected with the bottom end of a hose seat, a puncture needle is arranged in the outer sleeve and sequentially penetrates through the inner sleeve and the hose seat, and the bottom of the puncture needle is fixedly connected with the outer sleeve. The soft cushion piece is used for reducing the probability of pressure sore formed by fixing the indwelling needle on the body surface of a patient for a long time, the anti-needling component is used for preventing the puncture needle from damaging medical staff when the puncture needle withdraws from the hose seat, and the indication structure is used for judging the needle withdrawing distance.
Description
Technical Field
The invention relates to the technical field of infusion instruments, in particular to a novel multifunctional indwelling needle.
Background
In recent years, the application range of the venous indwelling needle is expanding, and the venous indwelling needle is widely used in various departments in clinic. Venous indwelling needles have some problems in clinical use:
(1) The retention needle is retained on the body surface of a patient for a fixed time of usually 4 to 5 days or even longer, the body surface of the patient can be damaged due to long-time fixed compression of the retention needle, pressure sores are seriously formed, and particularly the infant patient is more ubiquitous, so that great inconvenience is caused to clinical nursing work.
(2) When clinical medical personnel carry out the operation of keeping somewhere needle puncture to the patient, in order to better disposable puncture and keep somewhere successfully, there is such an operation rule, does in proper order: the tourniquet is pricked, the needle protection cap is removed, the puncture needle is loosened left and right, the inclined surface of the needle point upwards directly punctures veins at 15 to 30 degrees, the angle is reduced to 5 to 10 degrees after blood return, the needle is continuously advanced for 2 mm, the puncture needle is withdrawn for 2 to 3 mm, the needle holder is used for fully feeding the catheter and the puncture needle into the blood vessel together, the tourniquet is loosened, the speed regulator is opened, the puncture needle is completely withdrawn, and the indwelling needle is fixed. The operation of the indwelling needle provided by each medical instrument company in the prior art can be basically finished according to clinical operation specifications by medical staff, but the method has a key step of 'backing the puncture needle by 2 to 3 millimeters', wherein the step is to back the needle tip into the catheter and not too much, which is beneficial to the later complete feeding of the catheter and the puncture needle into the blood vessel without damaging the blood vessel; when the puncture needle is too many and the needle point is too deep in the catheter, the support of the catheter is insufficient when the catheter and the puncture needle are subsequently sent into the blood vessel, and the catheter is easy to distort and deform to influence the liquid medicine passing. These problems are all the main causes of the failure of the indwelling needle puncture.
(3) The puncture needle is withdrawn after the successful puncture of the clinical indwelling needle, and the risk that the needle point punctures medical staff easily occurs at the moment when the puncture needle is withdrawn from the indwelling needle hose seat, so that the blood-borne diseases are easily caused.
Disclosure of Invention
The invention aims at: the novel multifunctional indwelling needle can effectively reduce the probability that the indwelling needle is fixed on the surface of a patient for a long time to form pressure sores, can see the indication mark when the needle withdrawing step is executed in the puncturing process of medical staff, effectively judge the needle withdrawing distance, and can effectively prevent the medical staff from being stabbed when the puncture needle is pulled out of the hose seat after the indwelling needle is successfully placed.
The technical scheme adopted by the invention is as follows:
The utility model provides a novel multi-functional needle of keeping somewhere, includes the hose seat, is equipped with the cushion piece that is used for preventing pressing the sore on the hose seat, is equipped with the subassembly of preventing the acupuncture in the bottom of hose seat, is equipped with the instruction structure that is used for judging the needle withdrawal distance on preventing the acupuncture subassembly.
The bottom of the soft gasket is provided with a plurality of grooves which are arranged at intervals; the soft gasket is arranged at the position of the soft tube seat, which is contacted and fixed with the body surface of the human body, and the width of the soft gasket is larger than the diameter of the soft tube seat.
The anti-needling assembly comprises an inner sleeve, an outer sleeve capable of moving along the inner sleeve is sleeved on the inner sleeve, the inner sleeve is connected with the bottom end of a hose seat, a puncture needle is arranged in the outer sleeve, the puncture needle sequentially penetrates through the inner sleeve and the hose seat, and the bottom of the puncture needle is fixedly connected with the outer sleeve.
The inner sleeve is provided with a plurality of bayonets, the bayonets are distributed along the circumferential direction of the inner sleeve, the outer sleeve is provided with indication bosses matched with the bayonets on the inner sleeve, the indication bosses are arranged in the bayonets, and when the puncture needle is withdrawn, the indication bosses withdraw from the bayonets of the inner sleeve.
The middle sleeve is arranged between the inner sleeve and the outer sleeve, the inner sleeve and the outer sleeve are connected through the middle sleeve, the outer sleeve can move along the middle sleeve, the middle sleeve can move along the inner sleeve, and the puncture needle penetrates through the middle sleeve.
The inner sleeve is provided with an inner sleeve bottom end, a middle sleeve bottom end is provided with a middle limiting boss, a middle clamping ring is arranged at the top end of the middle sleeve, an outer clamping ring matched with the middle limiting boss is arranged at the top end of the outer sleeve, an inner limiting boss matched with the middle clamping ring is arranged at the bottom end of the inner sleeve, the middle clamping ring is tightly propped against the end face of the inner limiting boss when the middle sleeve moves to the bottom end of the middle sleeve, and the outer clamping ring is tightly propped against the end face of the middle limiting boss when the outer sleeve moves to the bottom end of the middle sleeve.
At least 1 baffle plate is arranged in the inner sleeve, the baffle plate is in clearance fit with the inner sleeve, and the puncture needle penetrates through the baffle plate and is in clearance fit with the baffle plate; a stop block for preventing the stop piece from moving towards the bottom end of the inner sleeve is arranged in the inner sleeve.
The inner sleeve is sleeved outside or embedded in the bottom end of the hose seat, an annular groove and a plurality of first protruding parts are sequentially arranged on the hose seat, the first protruding parts are uniformly distributed at intervals along the circumferential direction of the hose seat, and a second protruding part matched with the annular groove is arranged at the end part of the inner sleeve.
The bottom fixedly connected with transparent end cap at the outer tube, the pjncture needle runs through the outer tube and extends to in the end cap, pjncture needle and end cap clearance fit, and there is the interval bottom of pjncture needle and end cap, and the bottom of pjncture needle is opened, is equipped with the opening in the bottom of end cap, is fixed with the ventilated membrane of being made by ventilative liquid-proof material in opening part.
An anti-overflow plug is arranged in the hose seat and comprises a soft rubber plug and a fixed seat, the upper part of the soft rubber plug and the lower part of the soft rubber plug are both cylinders, the diameter of the upper part of the soft rubber plug is larger than that of the lower part of the soft rubber plug, the lower part of the soft rubber plug is provided with a needle hole matched with a puncture needle of an indwelling needle, the fixed seat is internally provided with a mounting hole, and the lower part of the soft rubber plug is arranged in the mounting hole of the fixed seat; the mounting hole is a stepped hole and comprises a first hole and a second hole, the second hole is close to the bottom end of the hose seat, and the lower part of the hose plug is in interference fit with the second hole; the upper part of the soft rubber plug is in interference fit with the hose seat, the fixed seat is in clearance fit with the hose seat, an annular boss is arranged on the outer wall of the fixed seat, a first annular boss for shielding the annular boss is arranged in the hose seat, and the first annular boss is in tight fit with the end face of the annular boss.
The soft cushion sheet is used for reducing the probability of pressure sore formed by the retention needle fixed on the surface of a patient for a long time, the anti-needling component is used for preventing the puncture needle from stabbing medical staff when the puncture needle withdraws from the hose seat, and the indication structure is used for judging the needle withdrawal distance; the soft gasket is provided with a plurality of through holes for ventilation, the width of the soft gasket is larger than the diameter of the hose seat, the contact area is increased, and the pressure intensity is reduced; the inner sleeve, the middle sleeve and the outer sleeve of the anti-needling assembly are used for wrapping the puncture needle in the needle withdrawing process, so that the puncture needle is prevented from being exposed, and the medical staff is prevented from being stabbed; a middle sleeve is arranged between the inner sleeve and the outer sleeve, so that the overall length of the needling prevention assembly is reduced; when the middle sleeve moves to the bottom end of the inner sleeve, the middle clamping ring is tightly propped against the end surface of the inner limit boss, and when the outer sleeve moves to the bottom end of the middle sleeve, the outer clamping ring is tightly propped against the end surface of the middle limit boss to play a limit role; the boss is matched with the bayonet, so that the position can be observed when a clinical medical staff performs the operation step of puncturing the indwelling needle to withdraw the needle, and the step is completed when the boss is seen to withdraw from the bayonet of the inner sleeve; the baffle is used for shielding the puncture needle and preventing the puncture needle from back puncture, namely, the puncture needle punctures towards the direction of the hose seat when the puncture needle withdraws from the needle; the hose seat is sequentially provided with an annular groove and a plurality of first protruding parts, and the annular groove and the first protruding parts are used for limiting the inner sleeve, so that the inner sleeve can be separated from the hose seat under the action of certain force; the upper part of the soft rubber plug of the anti-overflow plug is large, the lower part of the soft rubber plug is small, the upper part of the soft rubber plug is in interference fit with the hose seat, and under the condition that extremely small resistance is felt when medical staff withdraw the needle, the side opening on the puncture needle can be ensured not to leak blood in the needle withdrawing process, and the first annular protruding part is in tight fit with the end face top of the annular boss to play a limiting role.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a partial cross-sectional view of FIG. 1;
FIG. 3 is a schematic view of the anti-lancing assembly of FIG. 2 shown extended and separated from a hose seat;
FIG. 4 is a schematic diagram of the structure of the present invention (II);
FIG. 5 is a schematic view of the anti-lancing assembly of FIG. 4 in an extended configuration;
FIG. 6 is a partial cross-sectional view of FIG. 5;
FIG. 7 is a schematic view of the structure of a soft gasket;
fig. 8 is a schematic structural view (one) of the soft rubber plug;
fig. 9 is a schematic structural view of the soft rubber plug (ii);
FIG. 10 is a schematic structural view of a fixing base;
FIG. 11 is a cross-sectional view of a mounting hole of a fixing base as a stepped hole;
fig. 12 is a schematic structural view of one third to one fifth of the lower part of the soft rubber plug in interference fit with the fixing seat;
FIG. 13 is an enlarged partial schematic view of FIG. 12;
fig. 14 is a schematic diagram showing the structure of the transition fit between the lower part of the soft rubber plug and the fixing seat;
FIG. 15 is an enlarged partial schematic view of FIG. 14;
FIG. 16 is a schematic view of the structure of the lower part of the soft rubber plug in interference fit with the fixed seat;
FIG. 17 is an enlarged partial schematic view of FIG. 16;
FIG. 18 is a schematic view of the structure of the second annular protrusion of the lower portion of the soft rubber plug in interference fit with the fixing seat;
Fig. 19 is an enlarged partial schematic view of fig. 18.
Detailed Description
As shown in figures 1-19, the novel multifunctional indwelling needle comprises a hose seat 3, a soft cushion piece 4 for preventing pressure sores is arranged on the hose seat 3, the soft cushion piece 4 is used for reducing the probability that the indwelling needle is fixed on the surface of a patient for a long time to form the pressure sores, the soft cushion piece 4 is made of soft materials, such as silica gel, the soft cushion piece 4 and the hose seat 3 can be integrally formed, and can be adhered, clamped and other fixing modes, an anti-needling component is arranged at the bottom end of the hose seat 3 and used for preventing a medical staff from being pricked by the puncture needle 1 when the puncture needle 1 is withdrawn from the hose seat 3, and an indicating structure for judging the needle withdrawal distance is arranged on the anti-needling component and used for judging the needle withdrawal distance.
The front end of the hose seat 3 is fixedly provided with an indwelling tube 2, the puncture needle 1 penetrates through the indwelling tube 2 and is exposed out of the indwelling tube 2, the side surface of the hose seat 3 is communicated with an infusion tube 11, a flow stopping clamp 12 is arranged on the infusion tube 11, the end part of the infusion tube 11 is connected with a tee joint 13, and a sterile cap is arranged on one connecting port of the tee joint 13.
The cushion piece 4 is provided with a plurality of through holes 5, the through holes 5 are used for ventilation, and the bottom of the cushion piece 4 is provided with a plurality of grooves 4a which are arranged at intervals.
The soft pad piece 4 is arranged at the position of the soft tube seat 3, which is contacted and fixed with the body surface of the human body, the width of the soft pad piece 4 is larger than the diameter of the soft tube seat 3, the contact area is increased, the pressure intensity is reduced, pressure sores are avoided to be formed locally, the soft pad piece 4 is symmetrically arranged about the central line of the soft tube seat 3, namely, the central line of the soft pad piece 4 coincides with the central line of the soft tube seat 3.
The anti-needling assembly comprises an inner sleeve 6, an outer sleeve 8 capable of moving along the inner sleeve 6 is sleeved on the inner sleeve 6, the outer sleeve 8 is sleeved outside the inner sleeve 6, the outer sleeve 8 can move along the outer wall of the inner sleeve 6, or the outer sleeve 8 is sleeved in the inner sleeve 6, the outer sleeve 8 can move along the inner wall of the inner sleeve 6, the inner sleeve 6 is connected with the bottom end of a hose seat 3, a puncture needle 1 is arranged in the outer sleeve 8, the puncture needle 1 sequentially penetrates through the inner sleeve 6 and the hose seat 3, and the bottom of the puncture needle 1 is fixedly connected with the outer sleeve 8.
A notch is arranged on the side surface of the top of the puncture needle 1 and is used for blood return, the bottom of the puncture needle 1 is closed, and when the bottom of the puncture needle 1 extends to the outer sleeve 8, the puncture needle is closed and fixed in a dispensing mode; when the bottom of the puncture needle 1 does not penetrate the bottom of the outer sleeve 8, the bottom of the outer sleeve 8 is used for sealing the bottom, which is the prior art and is not described herein.
The outer sleeve 8 is sleeved outside the inner sleeve 6 in the normal condition, the outer sleeve 8 can move along the outer wall of the inner sleeve 6, the middle part of the outer sleeve 8 is convenient to hold for operation, the outer sleeve 8 is convenient to move, and meanwhile the movement condition of the outer sleeve 8 is convenient to observe.
The inner sleeve 6 is provided with a plurality of bayonets, the bayonets are distributed along the circumferential direction of the inner sleeve 6, the outer sleeve 8 is provided with indication bosses 7 matched with the bayonets on the inner sleeve 6, the indication bosses 7 are 2-3 mm long and are arranged in the bayonets, when the puncture needle 1 is withdrawn after completion, the indication bosses 7 are withdrawn from the bayonets of the inner sleeve 6, the position can be observed when a clinical medical staff performs the operation step of retaining needle puncture to execute the needle withdrawal, and when the bosses are seen to withdraw from the bayonets of the inner sleeve 6, the step is completed, so that the observation is facilitated.
When outer tube 8 cover is established including the cover outside the sleeve pipe 6, bayonet socket sets up on the top of sleeve pipe 6, and instruction boss 7 sets up on the top of outer tube 8, and when outer tube 8 cover was established including the cover in the sleeve pipe 6, the bayonet socket sets up the bottom of sleeve pipe 6, and instruction boss 7 sets up the bottom at outer tube 8.
A middle sleeve 18 is arranged between the inner sleeve 6 and the outer sleeve 8, the inner sleeve 6 and the outer sleeve 8 are connected through the middle sleeve 18, the outer sleeve 8 can move along the middle sleeve 18, the middle sleeve 18 can move along the inner sleeve 6, the puncture needle 1 penetrates through the middle sleeve 18, and the middle sleeve 18 is arranged between the inner sleeve 6 and the outer sleeve 8, so that the overall length of the puncture-preventing assembly is reduced.
When the outer sleeve 8 is sleeved outside the inner sleeve 6, the inner sleeve 6 and the outer sleeve 8 are connected through the middle sleeve 18, the outer sleeve 8 can move along the outer wall of the middle sleeve 18, the middle sleeve 18 can move along the outer wall of the inner sleeve 6, and the puncture needle 1 penetrates through the middle sleeve 18; when the outer sleeve 8 is sleeved in the inner sleeve 6, the inner sleeve 6 and the outer sleeve 8 are connected through the middle sleeve 18, the outer sleeve 8 can move along the inner wall of the middle sleeve 18, the middle sleeve 18 can move along the inner wall of the inner sleeve 6, and the puncture needle 1 penetrates through the middle sleeve 18.
The inner sleeve 6, the middle sleeve 18 and the outer sleeve 8 are sleeved, and only simple change of the sleeved form belongs to the protection scope of the invention.
The bottom end of the middle sleeve 18 is provided with a middle limiting boss 18b, the top end of the middle sleeve 18 is provided with a middle clamping ring 18a, the top end of the outer sleeve 8 is provided with an outer clamping ring 8a matched with the middle limiting boss 18b, the bottom end of the inner sleeve 6 is provided with an inner limiting boss 6b matched with the middle clamping ring 18a, when the middle sleeve 18 moves to the bottom end of the inner sleeve 6, the middle clamping ring 18a is tightly propped against the end face of the inner limiting boss 6b, and when the outer sleeve 8 moves to the bottom end of the middle sleeve 18, the outer clamping ring 8a is tightly propped against the end face of the middle limiting boss 18 b.
When the outer sleeve 8 is sleeved outside the inner sleeve 6, the middle limiting boss 18b is arranged on the outer wall of the middle sleeve 18, the middle clamping ring 18a is arranged on the inner wall of the middle sleeve 18, the inner limiting boss 6b is arranged on the outer wall of the inner sleeve 6, and the outer clamping ring 8a is arranged on the inner wall of the outer sleeve 8; when the outer sleeve 8 is sleeved in the inner sleeve 6, the middle limiting boss 18b is arranged on the inner wall of the middle sleeve 18, the middle clamping ring 18a is arranged on the outer wall of the middle sleeve 18, the inner limiting boss 6b is arranged on the inner wall of the inner sleeve 6, and the outer clamping ring 8a is arranged on the outer wall of the outer sleeve 8.
The positions of the middle limiting boss 18b, the middle clamping ring 18a, the inner limiting boss 6b and the outer clamping ring 8a are simply replaced, and all belong to the protection scope of the invention.
The inner sleeve 6, the middle sleeve 18 and the outer sleeve 8 of the needling prevention assembly are used for wrapping the puncture needle 1 in the needle withdrawing process, so that the puncture needle 1 is prevented from being exposed, medical staff is prevented from being injured by puncture, and the middle sleeve 18 is arranged between the inner sleeve 6 and the outer sleeve 8, so that the overall length of the needling prevention assembly is reduced.
At least 1 baffle 16 is arranged in the inner sleeve 6, the baffle 16 is in clearance fit with the inner sleeve 6, the puncture needle 1 penetrates through the baffle 16 and is in clearance fit with the baffle 16, the baffle 16 is preferably a baffle 16 made of metal, the baffle 16 can also be made of other materials, the baffle 16 can be made of other shapes such as round, square and the like, when the number of the baffles 16 is 1, after the puncture needle 1 is extracted from the baffle 16, the baffle 16 falls and contacts with the bottom of the inner sleeve 6, the puncture needle 1 is not aligned with the holes of the baffle 16, thus the needle return is avoided, when the number of the baffles 16 is 2 or more, each baffle 16 is different in size, when the puncture needle 1 is extracted from the baffle 16, the baffle 16 falls and contacts with the bottom of the inner sleeve 6, the corresponding needle holes are not at the same height, the needle holes corresponding to each baffle 16 are not aligned, and the needle holes of the adjacent baffle 16 are blocked by one baffle 16, thus the needle return, namely, in the puncture needle 1 is blocked towards the hose seat 3; a stop block 17 for preventing the stop piece 16 from moving towards the bottom end of the inner sleeve 6 is arranged in the inner sleeve 6, and the stop block 17 is clamped or fixedly connected with the inner sleeve 6.
The inner sleeve 6 is sleeved on or embedded in the bottom end of the hose seat 3, the hose seat 3 is sequentially provided with an annular groove 3b and a plurality of first protruding parts 3c, the first protruding parts 3c are uniformly distributed at intervals along the circumferential direction of the hose seat 3, the end part of the inner sleeve 6 is provided with a second protruding part 6a matched with the annular groove 3b, and the annular groove 3b and the first protruding part 3c are used for limiting the inner sleeve 6, so that the inner sleeve 6 can be separated from the hose seat 3 under the action of certain force.
The outer sleeve 8 is provided with a symmetrical operating handle 9, the operating surface of the operating handle 9 is provided with a plurality of raised edges 10, and the raised edges 10 are used for increasing friction force and preventing slipping.
The operating handle 9 is reverse U-shaped, and the bottom of operating handle 9 and outer tube 8 fixed connection, operating handle 9 and outer tube 8 integrated into one piece.
A conventional operating handle 9 may be provided on one side of the outer sleeve 8.
The bottom end fixedly connected with transparent end cap 19 at outer tube 8, pjncture needle 1 runs through outer tube 8 and extends to in the end cap 19, pjncture needle 1 and end cap 19 clearance fit, there is the interval bottom of pjncture needle 1 and end cap 19's bottom, the bottom of pjncture needle 1 is opened, be equipped with the opening at the bottom of end cap 19, be fixed with the ventilated membrane 20 of being made by ventilative impermeable material in the opening department, ventilated membrane 20 can adopt the PTFE membrane to make, the back blood mode of this kind of setting form's stay needle is at pjncture needle 1's bottom back blood, do not have the opening in pjncture needle 1's of pjncture needle 1 top side, this kind of form is fit for with pjncture needle 1 that the diameter is less, reinforcing pjncture needle 1's anti bending resistance ability.
When the transparent end cap 19 is not arranged at the bottom end of the outer sleeve 8, the indwelling needle is used for blood return at the top of the puncture needle 1, i.e. an opening is arranged at the side surface of the top end of the puncture needle 1 for blood return.
As shown in fig. 11, 12 and 13, an anti-overflow plug is arranged in the hose seat 3, the anti-overflow plug comprises a hose plug 14 and a fixed seat 15, the upper part 14a and the lower part 14b of the hose plug are cylindrical, the diameter of the upper part 14a of the hose plug is larger than that of the lower part 14b of the hose plug, the whole of the hose plug 14 is T-shaped, the lower part 14b of the hose plug is provided with a needle hole 14d matched with the puncture needle 1 of an indwelling needle, the fixed seat 15 is internally provided with a mounting hole 15b, the lower part 14b of the hose plug is arranged in the mounting hole 15b of the fixed seat 15, the mounting hole 14d is a stepped hole, the mounting hole 14d comprises a first hole 150 and a second hole 152, the second hole 152 is close to the bottom end of the hose seat 3, the lower part 14b of the hose plug is arranged in the mounting hole 14d and is in interference fit with the second hole 152, the rest positions of the lower part 14b of the hose plug are tightly fit with the mounting hole 14d, the upper part 14a of the hose plug is in interference fit with the hose seat 3, the fixed seat 15 is in clearance fit with the hose seat 3, the outer wall of the fixed seat 15 is provided with an annular boss 15a, and the annular boss 15a is arranged in the annular boss 3 for carrying out the annular boss 15a spacing-overflow-preventing on the annular boss 15 a; the puncture needle 1 of the retention needle penetrates through the anti-overflow plug, the puncture needle 1 is matched with the needle hole 14d of the soft rubber plug 14, and the inner wall of the needle hole 14d wraps the puncture needle 1 to avoid blood outflow; under the condition that extremely small resistance is felt when medical staff withdraw the needle, the anti-overflow plug can also ensure that the side opening on the puncture needle 1 can not leak blood in the needle withdrawing process.
The first annular protruding portion 3a is conical, and the top end of the first annular protruding portion 3a is large, the bottom end is small, and assembly is convenient.
The upper part 14a of the soft rubber plug is a part with a larger outer diameter and is close to the needle tip of the puncture needle 1, and the lower part 14b of the soft rubber plug is a part with a smaller outer diameter and is close to the needle tail of the puncture needle 1.
A conical transition hole 151 is arranged between the first hole 150 and the second hole 152, one end of the transition hole 151 close to the first hole 150 is large, the soft rubber plug 14 is in interference fit with the transition hole 151, the transition hole 151 plays a role in transition, the soft rubber plug 14 is convenient to install, the length of the lower portion 14b of the soft rubber plug is marked as f, the length of the interference fit of the lower portion 14b of the soft rubber plug and the installation hole 15b is marked as g, the g range is 0.2 f-0.35 f, the extrusion force of the fixed seat 15 on the interference fit is large, the wrapping force of the soft rubber plug 14 on the puncture needle 1 is increased, the wrapping force of the soft rubber plug 14 on the puncture needle 1 is guaranteed, and blood outflow is avoided.
As shown in fig. 14 and 15, the mounting hole 15b is a cylindrical hole, and the lower portion 14b of the soft rubber plug is in transition fit with the fixing seat 15.
As shown in fig. 16 and 17, the mounting hole 15b is a cylindrical hole, and the lower portion 14b of the soft rubber plug is in interference fit with the fixing seat 15.
As shown in fig. 9, 18 and 19, the mounting hole 15b is a cylindrical hole, a second annular protruding portion 14c is provided at the lower portion 14b of the soft rubber plug, the second annular protruding portion 14c is in interference fit with the mounting hole 15b, the wrapping force of the soft rubber plug 14 on the puncture needle 1 is increased, the second annular protruding portion 14c is close to the bottom end of the soft rubber plug 14, the length of the lower portion 14b of the soft rubber plug is denoted as f, the length of the second annular protruding portion 14c is denoted as h, and the range of h is 0.2f-0.35f.
The bottom of the second annular protruding portion 14c is flush with the bottom of the soft rubber plug 14, and round corners are rounded at two ends of the second annular protruding portion 14c, so that the installation is facilitated.
The needle hole 14d extends to the upper part 14a of the soft rubber plug, the length of the upper part 14a of the soft rubber plug is marked as i, the length of the needle hole 14d on the upper part 14a of the soft rubber plug is marked as j, the range of j is 0.2 i-0.35 i, the wall of the needle hole 14d is tightly attached to the puncture needle 1, the outflow of blood is avoided, but the wrapping force of the anti-overflow plug on the puncture needle 1 is relatively reduced, and the operation of medical staff is facilitated.
When the above-mentioned anti-overflow stopper guarantees that the needle point of pjncture needle 1 moves back into the anti-overflow stopper, under the circumstances that the side opening on pjncture needle 1 still is in anti-overflow stopper, reduces the wrapping force of anti-overflow stopper to pjncture needle 1, and the medical personnel operation of being convenient for when using, installs the anti-overflow stopper in fixing base 15, then installs the anti-overflow stopper in the hose seat 3 of keeping somewhere the needle, makes the annular boss 15a of fixing base 15 and the tight cooperation of first annular bellying 3a in the hose seat 3, accomplishes the assembly.
When the novel multifunctional indwelling needle is used, the tourniquet is pricked, the needle protection cap is removed, the left and right loosening puncture needle 1 is used, the needle tip inclined plane is upwards to directly puncture veins at 15 to 30 degrees, the angle is reduced to 5 to 10 degrees after blood return is seen, the needle is continuously inserted for 2 millimeters, the puncture needle is withdrawn for 12 millimeters to 3 millimeters, when the needle is withdrawn, the opening is withdrawn through the observation indication boss 7, the puncture needle 1 is indicated to be withdrawn to the place, the needle holder fully feeds a catheter and the puncture needle 1 into a blood vessel, the tourniquet is loosened to open the speed regulator, the puncture needle 1 is completely withdrawn, when the puncture needle 1 is pulled out, the outer sleeve 8 is held, the outer sleeve 8 moves backwards along the wall of the middle sleeve 18, when the outer clamping tube is tightly propped against the middle limit boss 18b, the outer sleeve 8 drives the middle sleeve 18 to move backwards, the middle sleeve 18 is continuously moved backwards when the middle clamping ring 18a is tightly propped against the inner limit boss 6b, the outer sleeve 18 is continuously moved backwards, the middle sleeve 18 is driven by the outer sleeve 8, the middle sleeve 6 drives the inner sleeve 6 to move backwards, the inner sleeve 6 is separated from the catheter 1 by the needle holder, the needle holder is released from the needle 1, the puncture needle 1 is completely withdraws from the needle holder, the puncture needle 1 is prevented from being contacted with the skin of a patient by a patient, the patient by the patient, the patient is prevented from being injured by the puncture needle, and the patient by the soft pad, the patient is prevented from being in the soft patient, and the patient has the medical patient, and the patient has a patient, and the patient.
The front end or the top end or the front part of the part refers to one end of the part close to the needle point of the puncture needle, and the rear end or the bottom part of the part refers to one end of the part away from the needle point of the puncture needle; the terms "first", "second", and the like in the present invention do not have a specific meaning, and are merely for convenience of description and understanding.
The above embodiments are illustrative of the present invention, and not limiting, and any simple modifications of the present invention fall within the scope of the present invention.
Claims (7)
1. A multifunctional indwelling needle comprising a catheter base, characterized in that: the soft tube seat is provided with a soft cushion piece for preventing pressure sores, the bottom end of the soft tube seat is provided with a needling prevention component, and the needling prevention component is provided with an indication structure for judging the needle withdrawing distance; the anti-needling assembly comprises an inner sleeve, an outer sleeve capable of moving along the inner sleeve is sleeved on the inner sleeve, the inner sleeve is connected with the bottom end of the hose seat, a puncture needle is arranged in the outer sleeve, the puncture needle sequentially penetrates through the inner sleeve and the hose seat, and the bottom of the puncture needle is fixedly connected with the outer sleeve; the inner sleeve is provided with a plurality of bayonets, the bayonets are distributed along the circumferential direction of the inner sleeve, the outer sleeve is provided with an indication boss matched with the bayonets on the inner sleeve, the indication boss is arranged in the bayonets, and when the puncture needle is withdrawn, the indication boss withdraws from the bayonets of the inner sleeve; the middle sleeve is arranged between the inner sleeve and the outer sleeve, the inner sleeve and the outer sleeve are connected through the middle sleeve, the outer sleeve can move along the middle sleeve, the middle sleeve can move along the inner sleeve, and the puncture needle penetrates through the middle sleeve.
2. The multi-functional indwelling needle according to claim 1, in which: the bottom of the soft gasket is provided with a plurality of grooves which are arranged at intervals; the soft gasket is arranged at the position of the soft tube seat, which is contacted and fixed with the body surface of the human body, and the width of the soft gasket is larger than the diameter of the soft tube seat.
3. The multi-functional indwelling needle according to claim 1, in which: the inner sleeve is provided with an inner sleeve bottom end, a middle sleeve bottom end is provided with a middle limiting boss, a middle clamping ring is arranged at the top end of the middle sleeve, an outer clamping ring matched with the middle limiting boss is arranged at the top end of the outer sleeve, an inner limiting boss matched with the middle clamping ring is arranged at the bottom end of the inner sleeve, the middle clamping ring is tightly propped against the end face of the inner limiting boss when the middle sleeve moves to the bottom end of the middle sleeve, and the outer clamping ring is tightly propped against the end face of the middle limiting boss when the outer sleeve moves to the bottom end of the middle sleeve.
4. The multi-functional indwelling needle according to claim 1, in which: at least 1 baffle plate is arranged in the inner sleeve, the baffle plate is in clearance fit with the inner sleeve, and the puncture needle penetrates through the baffle plate and is in clearance fit with the baffle plate; a stop block for preventing the stop piece from moving towards the bottom end of the inner sleeve is arranged in the inner sleeve.
5. The multi-functional indwelling needle according to claim 1, in which: the inner sleeve is sleeved outside or embedded in the bottom end of the hose seat, an annular groove and a plurality of first protruding parts are sequentially arranged on the hose seat, the first protruding parts are uniformly distributed at intervals along the circumferential direction of the hose seat, and a second protruding part matched with the annular groove is arranged at the end part of the inner sleeve.
6. The multi-functional indwelling needle according to any one of claims 1 to 5, in which: the bottom fixedly connected with transparent end cap at the outer tube, the pjncture needle runs through the outer tube and extends to in the end cap, pjncture needle and end cap clearance fit, and there is the interval bottom of pjncture needle and end cap, and the bottom of pjncture needle is opened, is equipped with the opening in the bottom of end cap, is fixed with the ventilated membrane of being made by ventilative liquid-proof material in opening part.
7. The multi-functional indwelling needle according to claim 1, in which: an anti-overflow plug is arranged in the hose seat and comprises a soft rubber plug and a fixed seat, the upper part of the soft rubber plug and the lower part of the soft rubber plug are both cylinders, the diameter of the upper part of the soft rubber plug is larger than that of the lower part of the soft rubber plug, the lower part of the soft rubber plug is provided with a needle hole matched with a puncture needle of an indwelling needle, the fixed seat is internally provided with a mounting hole, and the lower part of the soft rubber plug is arranged in the mounting hole of the fixed seat; the mounting hole is a stepped hole and comprises a first hole and a second hole, the second hole is close to the bottom end of the hose seat, and the lower part of the hose plug is in interference fit with the second hole; the upper part of the soft rubber plug is in interference fit with the hose seat, the fixed seat is in clearance fit with the hose seat, an annular boss is arranged on the outer wall of the fixed seat, a first annular boss for shielding the annular boss is arranged in the hose seat, and the first annular boss is in tight fit with the end face of the annular boss.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910496405.1A CN110075389B (en) | 2019-06-10 | 2019-06-10 | Multifunctional indwelling needle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910496405.1A CN110075389B (en) | 2019-06-10 | 2019-06-10 | Multifunctional indwelling needle |
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| CN110075389A CN110075389A (en) | 2019-08-02 |
| CN110075389B true CN110075389B (en) | 2024-06-04 |
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| CN201910496405.1A Active CN110075389B (en) | 2019-06-10 | 2019-06-10 | Multifunctional indwelling needle |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201888967U (en) * | 2010-12-01 | 2011-07-06 | 泸州医学院附属医院 | Pressure reducing type venous indwelling needle |
| CN102641529A (en) * | 2012-05-08 | 2012-08-22 | 江苏苏云医疗器材有限公司 | Indwelling needle |
| CN208319644U (en) * | 2017-08-03 | 2019-01-04 | 四川大业天成医药有限公司 | A kind of safety indwelling needle being precisely controlled puncture |
| CN211068436U (en) * | 2019-06-10 | 2020-07-24 | 河南驼人医疗器械集团有限公司 | Novel multifunctional remaining needle |
-
2019
- 2019-06-10 CN CN201910496405.1A patent/CN110075389B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201888967U (en) * | 2010-12-01 | 2011-07-06 | 泸州医学院附属医院 | Pressure reducing type venous indwelling needle |
| CN102641529A (en) * | 2012-05-08 | 2012-08-22 | 江苏苏云医疗器材有限公司 | Indwelling needle |
| CN208319644U (en) * | 2017-08-03 | 2019-01-04 | 四川大业天成医药有限公司 | A kind of safety indwelling needle being precisely controlled puncture |
| CN211068436U (en) * | 2019-06-10 | 2020-07-24 | 河南驼人医疗器械集团有限公司 | Novel multifunctional remaining needle |
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| CN110075389A (en) | 2019-08-02 |
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