CN114088295B - Positive pressure retention needle clamp and fixing method thereof - Google Patents
Positive pressure retention needle clamp and fixing method thereof Download PDFInfo
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- CN114088295B CN114088295B CN202111331037.9A CN202111331037A CN114088295B CN 114088295 B CN114088295 B CN 114088295B CN 202111331037 A CN202111331037 A CN 202111331037A CN 114088295 B CN114088295 B CN 114088295B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses a positive pressure indwelling needle clamp, which comprises a workbench, wherein a needle clamp and a joint clamp are arranged on the workbench, the needle clamp comprises a first base, a rotating disc and a limiting mechanism for fixing the rotating disc are arranged on the first base, a sleeve shell is horizontally arranged on the rotating disc, one end of the sleeve shell is provided with a sleeve seat for sleeving a positive pressure indwelling needle sleeve, and the other end of the sleeve shell is provided with a jacking mechanism; the joint clamp comprises a second base and a hydraulic telescopic cylinder, wherein the second base is fixed on a workbench, the hydraulic telescopic cylinder is fixedly arranged above the second base through a fixing frame, a plurality of telescopic rods are arranged at the lower ends of the hydraulic telescopic cylinders, a top plate is fixedly arranged at the lower ends of the telescopic rods, a plurality of pairs of fixing blocks which are oppositely arranged are arranged between the top plate and the second base, and grooves for limiting and fixing positive-pressure joints are symmetrically arranged at the front ends of each pair of fixing blocks; this scheme simple structure can effectually fix positive pressure retention needle, and its practicality is strong.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to a positive pressure retention needle clamp and a fixing method thereof.
Background
The positive pressure retention needle consists of a positive pressure joint, an end cap, an extension tube, a flow stopping clamp, a needle seat, a steel needle, a sleeve, a retention hose, a sheath and a branch joint. Because the puncture area of the positive pressure indwelling needle for the blood vessel is small, the indwelling hose can be reserved in the blood vessel after the steel needle is pulled out, so that the puncture frequency of the blood vessel can be effectively reduced, and the workload of medical staff is reduced. In the use process of the positive pressure indwelling needle, the positive pressure connector can automatically spray water columns forwards to generate positive pressure when the positive pressure connector is screwed out of the injector or the infusion set, so that the blood reflux can be reduced, and the damage to blood vessels and the formation of venous thrombosis can be reduced.
After the positive pressure indwelling needle is produced and assembled, the total detection is required, the main detection amount is the detection of air tightness and flow, wherein the air tightness detection aims to ensure that the liquid medicine is not leaked in the process of entering a human body through the positive pressure indwelling needle, firstly, the foreign matters outside are prevented from possibly entering the indwelling needle to pollute the liquid medicine, secondly, the liquid medicine is prevented from leaking to the outside, if the leakage occurs, the liquid medicine is wasted slightly, and the outside environment is polluted heavily; the purpose of flow detection is to prevent the liquid medicine from entering the human body through the positive pressure retention needle too fast or too slow, if the liquid medicine is too fast, the heart burden of the human body is easy to be increased, if the liquid medicine is too fast, heart failure or pulmonary edema can be caused, and if the liquid medicine is too slow, the liquid medicine cannot play a role in medicine or increase the psychological burden of the patient. The current situation is to detect the air tightness and the flow rate manually, but the manual detection workload is large, the error rate is high, and the degree of automation is low. The positive pressure retention needle clamp may contribute to automated detection of a subsequent positive pressure retention needle.
Leakage is a major problem in testing because the connection is made manually by using chemicals as adhesives to connect the extension tube to the needle and positive pressure fitting. During the detection process, the joint of the extension tube, the needle body and the positive pressure connector can be continuously bent, so that the abrasion is generated, and the service life of the positive pressure indwelling needle is further reduced.
During manual detection, the extension tube is bent once when a worker takes down the sleeve at the joint of the needle body and the positive pressure connector respectively, is bent once when the air tightness is detected, and is bent once when the flow is detected, and abrasion can be continuously generated, so that a clamp is urgently required to be designed, the joint of the extension tube and the needle body and the positive pressure connector respectively does not generate excessive bending or the clamp does not contact the joint of the extension tube and the needle body and the positive pressure connector respectively, the extension tube is naturally transited, and finally the abrasion is reduced or the abrasion caused by manual detection is far less.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a positive pressure retention needle clamp capable of fixing a positive pressure connector and a positive pressure retention needle body and a fixing method thereof.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the positive pressure indwelling needle clamp comprises a workbench, a needle clamp and a joint clamp are arranged on the workbench, the needle clamp comprises a first base, a rotating disc and a limiting mechanism for fixing the rotating disc are arranged on the first base, a sleeve shell is horizontally arranged on the rotating disc, a sleeve seat for sleeving a positive pressure indwelling needle sleeve is arranged at one end of the sleeve shell, and a jacking mechanism is arranged at the other end of the sleeve shell; the joint clamp comprises a second base and a hydraulic telescopic cylinder, wherein the second base is fixed on a workbench, the hydraulic telescopic cylinder is fixedly arranged above the second base through a fixing frame, the lower end of the hydraulic telescopic cylinder is provided with a plurality of telescopic rods, the lower ends of the telescopic rods are fixedly provided with a top plate, a plurality of pairs of fixing blocks which are oppositely arranged are arranged between the top plate and the second base, the front ends of each pair of fixing blocks are symmetrically provided with grooves for limiting and fixing positive pressure joints, and limiting clamping pieces for preventing the positive pressure joints from rotating are arranged on the second base.
Further, the rotary disk is gear structure, and stop gear is provided with the gag lever post including fixing the base on first base on being provided with the through-hole on the base, and the activity is provided with the gag lever post in the through-hole, and the tip and the teeth of a cogwheel looks block of rotary disk of gag lever post are fixed on the gag lever post and are provided with the handle of being convenient for drag the gag lever post.
Further, the sleeve shell is of a strip-shaped structure with a semicircular section, an arc-shaped groove is formed in the sleeve shell, the sleeve seat is embedded at one end of the arc-shaped groove, the jacking mechanism is fixedly arranged at the other end of the arc-shaped groove, and an opening in a strip shape is formed in the sleeve seat.
Further, the jacking mechanism comprises a cylindrical seat fixedly arranged at the end part of the arc-shaped groove, a threaded hole is formed in the cylindrical seat, a screw rod is arranged in the threaded hole in a penetrating mode, the screw rod is parallel to the extending direction of the arc-shaped groove, and a jacking block used for being abutted against the bottom of the needle seat of the positive pressure indwelling needle is arranged at the front end of the screw rod.
Further, a rotating head which is convenient for the screw rod to rotate is fixedly arranged on the screw rod.
Further, the groove is in an inverted trapezoid shape with a large upper part and a small lower part.
Further, the limiting clamping piece comprises a side plate and a clamping rod, the side plate is fixedly arranged on the second base, a horizontal square hole is formed in the upper end of the side plate, the clamping rod is U-shaped, and one end of the clamping rod is in insertion fit with the square Kong Cheng.
Provided is a method for fixing a positive pressure retention needle clamp, comprising the following steps:
s1: a needle seat of the positive pressure retention needle is held by hand, a sleeve of the positive pressure retention needle penetrates from the bottom of the sleeve seat, and a branch joint for connecting an extension tube is clamped on the opening, so that the sleeve of the positive pressure retention needle is sleeved in the sleeve seat;
s2: manually rotating the rotating head to enable the screw rod to rotate and drive the ejector block at the front end of the screw rod to move towards the middle part of the sleeve shell until the ejector block is abutted with the bottom of the needle seat of the positive pressure retention needle;
s3: rotating the rotating disk to enable the branch joint on the sleeve to point to the joint clamp;
s4: manually pushing the limiting rod to enable the front end of the limiting rod to be clamped with gear teeth of the rotating disc, limiting and fixing the rotating disc, and fixing the needle body at the front end of the positive pressure indwelling needle;
s5: placing the positive pressure connector in a groove of a fixed block on the second base, placing the infusion connecting piece on the side plate, and directing the end head, used for connecting the extension tube, on the positive pressure connector to the branch connector so as to ensure that the extension tube is not bent;
s6: inserting the clamping rod into the square hole, sleeving the clamping rod on the infusion connecting piece, and limiting and fixing the infusion connecting piece;
s7: and controlling the hydraulic telescopic cylinder to enable the telescopic rod to drive the fixed block on the top plate to move towards the fixed block on the second base until the top plate is in butt joint with the fixed block on the second base, and fixing the positive pressure joint.
The beneficial effects of the invention are as follows:
1. according to the scheme, the needle body clamp and the connector clamp are used for respectively fixing the front end needle body and the positive pressure connector of the positive pressure indwelling needle, so that a worker can naturally overbend the connection parts of the extension tube and the sleeve and the positive pressure connector respectively in the process of feeding the sleeve of the positive pressure indwelling needle into the needle body clamp, the connection parts of the extension tube, the needle body and the positive pressure connector cannot be touched in the clamping process of the clamp, and compared with manual detection, the possibility of leakage is greatly reduced; meanwhile, the detection current situation of the positive pressure retention needle is that the worker holds the positive pressure retention needle by hand to be connected with a detection instrument, in the operation process, the sleeve outside the steel needle is easy to bump off to expose the steel needle outside, the worker is easy to stab, meanwhile, the positive pressure retention needle of the stab worker is polluted to be discarded, the loss of a factory is caused, the needle body at the front end of the positive pressure retention needle is clamped, the sleeve falling is caused to be very few, and the safety of the worker is protected.
2. The rotating disc can adjust the direction of the sleeve shell, and the rotating disc is limited and fixed through the clamping of the end part of the limiting rod and the gear teeth of the rotating disc, so that the positive pressure indwelling needle body sleeved on the sleeve shell can be adjusted in direction according to the actual use condition, and the practicability of the positive pressure indwelling needle body is enhanced; meanwhile, the rotary disk can be free to rotate without being fixed, so that the extension pipe can naturally extend and is not subjected to bending stress.
3. One side of the sleeve seat is provided with an opening, the size of the opening is matched with the size of a branch joint of the positive pressure indwelling needle, the quick positioning of a worker is facilitated, the sleeve of the positive pressure indwelling needle is inserted into the sleeve seat, and meanwhile, the arc-shaped groove is formed, so that the sleeve is conveniently inserted.
4. The ejector block at the front end of the screw rod can be driven to move in the horizontal direction through the rotation of the screw rod, and the ejector block is abutted against the bottom of the needle seat of the positive pressure retention needle, so that the needle body at the front end of the positive pressure retention needle is fixedly arranged on the sleeve seat, and the jacking mechanism is simple in structure and convenient to operate.
5. The rotating head is convenient for the staff to rotate the screw rod.
6. The groove is in an inverted trapezoid shape with a large upper part and a small lower part, so that the groove between two butted fixing blocks forms a closed-loop hexagonal structure, and the positioning stability of the closed-loop hexagonal structure is improved.
7. The infusion connecting piece is sleeved with the opening at one side of the clamping rod, so that the purpose of limiting and fixing the infusion connecting piece is achieved, and the positive pressure connector is prevented from rotating.
8. The fixing method of the scheme can effectively fix the needle body and the positive pressure connector at the front end of the positive pressure indwelling needle, and is simple in structure, convenient to operate and firm in fixation.
Drawings
Fig. 1 is a schematic view of a positive pressure retention needle.
Fig. 2 is a view showing the whole structure of the positive pressure retention needle according to the present embodiment.
Fig. 3 is a top view of the rotating disk and the first base.
Fig. 4 is a structural view of the needle clamp.
Fig. 5 is a schematic view of a needle clamp holding a positive pressure indwelling needle.
Fig. 6 is a structural view of the joint clamp.
Fig. 7 is a schematic view of a positive pressure fitting secured by a fitting clamp.
Fig. 8 is a side view of the second mount.
Fig. 9 is a perspective view of the second base.
Wherein 1, workbench, 2, first base, 3, rotary disk, 4, sleeve shell, 5, sleeve seat, 6, second base, 7, hydraulic telescopic cylinder, 8, mount, 9, telescopic link, 10, roof, 11, fixed block, 12, recess, 13, base, 14, gag lever post, 15, handle, 16, arc groove, 17, opening, 18, cylinder seat, 19, lead screw, 20, kicking block, 21, swivel, 22, curb plate, 23, clamping lever, 24, square hole, 25, needle holder, 26, sleeve, 27, branch joint, 28, positive pressure joint, 29, infusion connector, 30, extension tube, 31, stop clip, 32, sheath, 33, steel needle.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and all the inventions which make use of the inventive concept are protected by the spirit and scope of the present invention as defined and defined in the appended claims to those skilled in the art.
As shown in fig. 1, the positive pressure indwelling needle fixed by the scheme comprises a needle body and a positive pressure connector 28 which are connected through an extension tube 30, wherein the needle body consists of a needle seat 25, a sleeve 26, a branch connector 27, a sheath 32 and a steel needle 33, an infusion connecting piece 29 is arranged on the positive pressure connector 28, a flow stopping clamp 31 is arranged on the extension tube 30, and particularly, the positive pressure indwelling needle fixed by the scheme is of an existing conventional structure, and the structural characteristics of the positive pressure indwelling needle are not repeated.
As shown in fig. 2, the positive pressure indwelling needle clamp of the scheme comprises a workbench 1, a needle clamp and a joint clamp are arranged on the workbench 1, the needle clamp comprises a first base 2, a rotating disc 3 and a limiting mechanism for fixing the rotating disc 3 are arranged on the first base 2, a sleeve shell 4 is horizontally arranged on the rotating disc 3, a sleeve seat 5 for sleeving a sleeve 26 is arranged at one end of the sleeve shell 4, and a jacking mechanism is arranged at the other end of the sleeve shell 4.
Specifically, as shown in fig. 3, the rotating disc 3 is in a gear structure, the limiting mechanism comprises a base 13 fixed on the first base 2, a through hole is formed in the base 13, a limiting rod 14 is movably arranged on the through hole in a penetrating mode, the end portion of the limiting rod 14 is clamped with gear teeth of the rotating disc 3, and a handle 15 which is convenient for dragging the limiting rod 14 is fixedly arranged on the limiting rod 14; the rotating disc 3 can adjust the direction of the sleeve shell 4, and the rotating disc 3 is limited and fixed through the clamping of the end part of the limiting rod 14 and the gear teeth of the rotating disc 3, so that the needle body of the positive pressure indwelling needle sleeved on the sleeve shell 4 can be adjusted in direction according to the actual use condition, and the practicability of the positive pressure indwelling needle is enhanced; meanwhile, the rotary disk 3 can be free to rotate, so that the extension tube 30 can extend naturally and is not subjected to bending stress.
As shown in fig. 4 and 5, the sleeve housing 4 is in a strip-shaped structure with a semicircular section, an arc groove 16 is formed in the sleeve housing 4, the sleeve seat 5 is embedded at one end of the arc groove 16, the jacking mechanism is fixedly arranged at the other end of the arc groove 16, an opening 17 in a strip shape is formed in the sleeve seat 5, the size of the opening 17 is matched with that of a branch joint 27 of the positive pressure indwelling needle, rapid positioning of a worker is facilitated, the sleeve 26 of the positive pressure indwelling needle is inserted into the sleeve seat 5, and meanwhile, the arc groove 16 is arranged for facilitating insertion of the sleeve.
The jacking mechanism comprises a cylindrical seat 18 fixedly arranged at the end part of the arc-shaped groove 16, a threaded hole is formed in the cylindrical seat 18, a screw rod 19 is arranged on the threaded hole in a penetrating manner, the screw rod 19 is parallel to the extending direction of the arc-shaped groove 16, a jacking block 20 for abutting against the bottom of a needle seat 25 of the positive pressure indwelling needle is arranged at the front end of the screw rod 19, and a rotating head 21 which is convenient for the screw rod 19 to rotate is fixedly arranged on the screw rod 19; the ejector block 20 at the front end of the screw rod 19 can be driven to move in the horizontal direction through the rotation of the screw rod 19, and the ejector block 20 is abutted against the bottom of the needle seat 25 of the positive pressure indwelling needle, so that the needle body at the front end of the positive pressure indwelling needle is fixedly arranged on the sleeve seat 5, and the jacking mechanism is simple in structure and convenient to operate.
As shown in fig. 2, 6 and 7, the joint clamp comprises a second base 6 and a hydraulic telescopic cylinder 7, wherein the second base 6 is fixed on the workbench 1, the hydraulic telescopic cylinder 7 is fixedly arranged above the second base 6 through a fixing frame 8, two parallel and synchronous telescopic rods 9 are arranged at the lower ends of the hydraulic telescopic cylinder 7, a top plate 10 is fixedly arranged at the lower ends of the two telescopic rods 9, two pairs of fixing blocks 11 which are oppositely arranged are arranged between the top plate 10 and the second base 6, grooves 12 for limiting and fixing a positive pressure joint 28 are symmetrically arranged at the front end of each pair of fixing blocks 11, and the grooves 12 are in an inverted ladder shape with a large upper part and a small lower part, so that a closed-loop hexagonal structure is formed between the grooves 12 between the two butted fixing blocks 11, and the positioning stability of the closed-loop hexagonal structure is improved; the second base 6 is provided with a limiting clamp for preventing the positive pressure joint 28 from rotating.
As shown in fig. 8 and 9, the limiting clamping piece comprises a side plate 22 and a clamping rod 23, the side plate 22 is fixedly arranged on the second base 6, a horizontal square hole 24 is formed in the upper end of the side plate 22, the clamping rod 23 is in a U shape, and one end of the clamping rod 23 is in socket fit with the square hole 24; the opening 17 at one side of the clamping rod 23 is sleeved on the infusion connecting piece 29, so that the purpose of limiting and fixing the infusion connecting piece 29 is achieved, and the positive pressure connector 28 is prevented from rotating.
Provided is a method for fixing a positive pressure retention needle clamp, comprising the following steps:
s1: the needle seat 25 of the hand-held positive pressure retention needle penetrates the sleeve 26 of the positive pressure retention needle from the bottom of the sleeve seat 5, and meanwhile, the branch joint 27 for connecting the extension tube 30 is clamped on the opening 17, so that the sleeve 26 can be smoothly sleeved in the sleeve seat 5;
s2: the rotary head 21 is manually rotated, so that the screw rod 19 rotates and drives the ejector block 20 at the front end of the screw rod 19 to move towards the middle part of the sleeve shell 4 until the ejector block 20 is abutted with the bottom of the needle seat 25 of the positive pressure retention needle;
s3: rotating the rotating disc 3 so that the branch joint 27 on the sleeve 26 is directed to the joint clamp;
s4: the limiting rod 14 is manually pushed, so that the front end of the limiting rod 14 is clamped with the gear teeth of the rotating disc 3, the rotating disc 3 is limited and fixed, and the front end needle body of the positive pressure retention needle is fixed;
s5: placing the positive pressure connector 28 in the groove 12 of the fixed block 11 on the second base 6, placing the infusion connecting piece 29 on the side plate 22, and directing the end of the positive pressure connector 28 for connecting the extension tube 30 to the branch connector 27 to ensure that the extension tube 30 is not bent;
s6: the clamping rod 23 is inserted into the square hole 24, and the opening 17 at one side of the clamping rod 23 is sleeved on the infusion connecting piece 29, so that the infusion connecting piece 29 is limited and fixed;
s7: the hydraulic telescopic cylinder 7 is controlled, so that the telescopic rod 9 drives the fixed block 11 on the top plate 10 to move towards the fixed block 11 on the second base 6 until the top plate 10 and the fixed block 11 on the second base 6 are in butt joint, and the positive pressure joint 28 is fixed.
The fixing method of the scheme can effectively fix the needle body at the front end of the positive pressure indwelling needle and the positive pressure connector 28, and has the advantages of simple structure, convenient operation and firm fixation; in particular, the method for disassembling the positive pressure retention needle clamp according to the present embodiment is opposite to the method for fixing the positive pressure retention needle clamp.
In summary, the front end needle body and the positive pressure connector 28 of the positive pressure indwelling needle are respectively fixed by the needle body clamp and the connector clamp, so that the connection parts of the extension tube 30 and the sleeve and the positive pressure connector 28 are naturally excessive in the process of feeding the sleeve 26 of the positive pressure indwelling needle into the needle body clamp by a worker, the extension tube 30 cannot be excessively bent, the connection parts of the extension tube 30 and the needle body and the positive pressure connector 28 cannot be touched in the clamping process of the clamp, and compared with manual detection, the possibility of leakage is greatly reduced; meanwhile, the detection current situation of the positive pressure retention needle is that the worker holds the positive pressure retention needle by hand to be connected with a detection instrument, in the operation process, the sleeve outside the steel needle 33 is easily bumped to expose the steel needle 33, the worker is easily stabbed, meanwhile, the positive pressure retention needle for stabbing the worker is polluted to be discarded, the loss of a factory is caused, the needle body at the front end of the positive pressure retention needle is clamped, the sleeve falling is rarely caused, and the safety of the worker is protected.
Claims (6)
1. The positive pressure retention needle clamp is characterized by comprising a workbench (1), wherein a needle clamp and a joint clamp are arranged on the workbench (1), the needle clamp comprises a first base (2), a rotating disc (3) and a limiting mechanism for fixing the rotating disc (3) are arranged on the first base (2), a sleeve shell (4) is horizontally arranged on the rotating disc (3), a sleeve seat (5) for sleeving a sleeve (26) is arranged at one end of the sleeve shell (4), and a jacking mechanism is arranged at the other end of the sleeve shell (4);
the rotary disk (3) is of a gear structure, the limiting mechanism comprises a base (13) fixed on the first base (2), a through hole is formed in the base (13), a limiting rod (14) is movably arranged on the through hole in a penetrating mode, the end portion of the limiting rod (14) is clamped with gear teeth of the rotary disk (3), and a handle (15) which is convenient for dragging the limiting rod (14) is fixedly arranged on the limiting rod (14);
the connector clamp comprises a second base (6) and a hydraulic telescopic cylinder (7), wherein the second base (6) is fixed on a workbench (1), the hydraulic telescopic cylinder (7) is fixedly arranged above the second base (6) through a fixing frame (8), a plurality of telescopic rods (9) are arranged at the lower ends of the hydraulic telescopic cylinder (7), a top plate (10) is fixedly arranged at the lower ends of the telescopic rods (9), a plurality of pairs of fixing blocks (11) which are oppositely arranged are arranged between the top plate (10) and the second base (6), grooves (12) for limiting and fixing positive pressure connectors (28) are symmetrically arranged at the front ends of each pair of fixing blocks (11), and limiting clamping pieces for preventing the positive pressure connectors (28) from rotating are arranged on the second base (6);
the limiting clamping piece comprises a side plate (22) and a clamping rod (23), wherein the side plate (22) is fixedly arranged on the second base (6), a horizontal square hole (24) is formed in the upper end of the side plate (22), the clamping rod (23) is in a U shape, and one end of the clamping rod (23) is in socket fit with the square hole (24).
2. The positive pressure indwelling needle clamp according to claim 1, wherein the sleeve housing (4) is of a strip-shaped structure with a semicircular section, an arc-shaped groove (16) is formed in the sleeve housing (4), the sleeve seat (5) is embedded at one end of the arc-shaped groove (16), the jacking mechanism is fixedly arranged at the other end of the arc-shaped groove (16), and an opening (17) in a strip shape is formed in the sleeve seat (5).
3. The positive pressure indwelling needle clamp according to claim 1 or 2, wherein the jacking mechanism comprises a cylindrical seat (18) fixedly arranged at the end part of the arc-shaped groove (16), a threaded hole is formed in the cylindrical seat (18), a screw rod (19) is arranged on the threaded hole in a penetrating mode, the screw rod (19) is parallel to the extending direction of the arc-shaped groove (16), and a jacking block (20) used for abutting against the bottom of a needle seat (25) of the positive pressure indwelling needle is arranged at the front end of the screw rod (19).
4. A positive pressure indwelling needle clamp according to claim 3, in which a rotating head (21) which facilitates rotation of the screw (19) is fixedly provided on the screw (19).
5. The positive pressure retention needle clamp according to claim 1, wherein the recess (12) is inverted trapezoidal in shape.
6. A method of fixing using the positive pressure retention needle clamp of any one of claims 1 to 5, comprising the steps of:
s1, a needle seat (25) of the positive pressure retention needle is held by hand, a sleeve (26) of the positive pressure retention needle penetrates through the bottom of the sleeve seat (5), and a branch joint (27) for connecting an extension tube (30) is clamped on an opening (17) at the same time, so that the sleeve (26) of the positive pressure retention needle can be smoothly sleeved in the sleeve seat (5);
s2, manually rotating the rotating head (21) to enable the screw rod (19) to rotate and drive a top block (20) at the front end of the screw rod (19) to move towards the middle of the sleeve shell (4) until the top block (20) is abutted with the bottom of a needle seat (25) of the positive pressure retention needle;
s3, rotating the rotating disc (3) to enable the branch joint (27) on the sleeve (26) to point to the joint clamp;
s4, manually pushing a limiting rod (14) to enable the front end of the limiting rod (14) to be clamped with gear teeth of the rotating disc (3), so that the rotating disc (3) is limited and fixed, and fixing of a needle body at the front end of the positive pressure indwelling needle is completed;
s5, placing the positive pressure joint (28) in a groove (12) of a fixed block (11) on the second base (6), placing the infusion connecting piece (29) on the side plate (22), and directing the end head of the positive pressure joint (28) for connecting the extension tube (30) to the branch joint (27) to ensure that the extension tube (30) is not bent;
s6, inserting the clamping rod (23) into the square hole (24), and sleeving an opening at one side of the clamping rod (23) on the infusion connecting piece (29), so that the infusion connecting piece (29) is limited and fixed;
s7, controlling the hydraulic telescopic cylinder (7) to enable the telescopic rod (9) to drive the fixed block (11) on the top plate (10) to move towards the fixed block (11) on the second base (6) until the top plate (10) and the fixed block (11) on the second base (6) are in butt joint, and fixing the positive pressure joint (28) is completed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111331037.9A CN114088295B (en) | 2021-11-11 | 2021-11-11 | Positive pressure retention needle clamp and fixing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111331037.9A CN114088295B (en) | 2021-11-11 | 2021-11-11 | Positive pressure retention needle clamp and fixing method thereof |
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| Publication Number | Publication Date |
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| CN114088295A CN114088295A (en) | 2022-02-25 |
| CN114088295B true CN114088295B (en) | 2023-06-20 |
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| CN202111331037.9A Active CN114088295B (en) | 2021-11-11 | 2021-11-11 | Positive pressure retention needle clamp and fixing method thereof |
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| CN114608765B (en) * | 2022-04-12 | 2022-11-25 | 河北橡一医药科技股份有限公司 | Needle sleeve sealing performance detection device for medical pre-filling and sealing syringe |
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| JP2001046507A (en) * | 1999-08-04 | 2001-02-20 | Medikit Kk | Retaining needle |
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