CN111588447A - Epidural puncture needle inserting device and method for anesthesia department - Google Patents
Epidural puncture needle inserting device and method for anesthesia department Download PDFInfo
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- CN111588447A CN111588447A CN202010432616.1A CN202010432616A CN111588447A CN 111588447 A CN111588447 A CN 111588447A CN 202010432616 A CN202010432616 A CN 202010432616A CN 111588447 A CN111588447 A CN 111588447A
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Abstract
The invention relates to an epidural puncture needle inserting device for anesthesia department, which comprises a supporting plate (100), a puncture needle (200) and a needle inserting mechanism (300), wherein the needle inserting mechanism (300) is arranged on the supporting plate (100) to drive the puncture needle (200) to move, a motor (301) drives a screw rod mechanism (320) through a planetary gear set (310) to push the puncture needle (200) to insert, and the motor (301) drives the puncture needle (200) to insert in a rotating mode through a disc throwing mechanism (330) by adjusting the rotating speed. According to the invention, the non-rotary needle insertion and the rotary needle insertion of the puncture needle (200) are realized by the needle insertion mechanism (300) at different rotating speeds of the same motor (301), so that the trouble of independently configuring two mechanisms to realize the needle insertion and drive the puncture needle (200) to rotate is avoided, the needle insertion process is simplified, and the semi-automatic needle insertion is realized; in addition, the support plate (100) can be used for fixing in the needle inserting process, so that the tissue damage of a patient caused by twisting and shaking of medical staff in the needle inserting process can be avoided.
Description
Technical Field
The invention relates to a medical appliance, in particular to a needle inserting device for an anesthesia department.
Background
Epidural anesthesia (epidural puncture surgery) refers to epidural space block anesthesia, i.e., local anesthetic is injected into an epidural space to block spinal nerve roots and temporarily paralyze the innervation area, which is called epidural space block anesthesia, or epidural block for short. Depending on the mode of administration, a single-dose method and a continuous method can be classified. The puncture position can be divided into high position, middle position, low position and sacral canal block.
At present, in an epidural puncture operation, a bevel needle head of a puncture needle needs to be approximately parallel to ligamentum flavum or puncture to the ligamentum flavum with an angle unchanged, a non-resistance injector is placed at the needle tail of the puncture needle, and when the non-resistance injector is pushed to have obvious resilience and continue to puncture with obvious resistance, the needle head of the puncture needle can be judged to reach the ligamentum flavum; at the moment, the angle of the needle head of the puncture needle needs to be rotated to be approximately perpendicular to the trend of the ligamentum flavum or the needle needs to be inserted in a spiral mode so as to be convenient for reaching the ligamentum flavum, the needle inserting speed needs to be reduced, when a drop of water at the tail of the needle is sucked by the puncture needle and a user feels a drop of empty, the puncture can be judged to be finished, and the needle inserting needs to be stopped.
The difficulty of epidural puncture operation is high, a beginner easily brings pain to a user due to the fact that the needle inserting process is too long caused by insufficient experience, or the skin tissue is injured due to shaking or twisting of hands of medical staff during needle inserting, the strength of the manipulation can be mastered by years of experience, and the beginner easily has too many medical accidents.
Therefore, there is a need for an epidural puncture needle insertion device which can reduce the needle insertion difficulty and assist the medical staff in semi-automatic needle insertion.
Disclosure of Invention
The invention aims to provide an epidural puncture needle inserting device which can reduce the needle inserting difficulty, protect the skin tissue of a patient and assist medical staff in semi-automatic needle inserting.
The invention relates to an epidural puncture needle-inserting device for anesthesia department, which comprises
A support plate;
the needle head of the puncture needle is a bevel needle head;
the needle inserting mechanism is arranged on the supporting plate to drive the puncture needle to move, the motor drives the screw rod mechanism through the planetary gear set to push the puncture needle to insert, and the motor drives the puncture needle to insert in a rotating mode through the disc throwing mechanism by adjusting the rotating speed.
The invention relates to an epidural puncture needle inserting device for anesthesia department, wherein a planetary gear set of a needle inserting mechanism comprises a sun gear, a planetary gear, a gear ring, a planetary shaft and a first supporting rod, the sun gear is coaxially fixed with an output shaft of a motor, the motor is fixed with a supporting plate, the sun gear is meshed with at least three planetary gears, the planetary shaft is coaxially fixed on the planetary gear, the outer circumferential surface of the planetary gear is meshed with the inner circumferential surface of the gear ring, the gear ring is fixed with one end of the first supporting rod, and the other end of the gear ring is fixed with the supporting plate;
the screw mechanism comprises a sleeve, a fixing ring, a second supporting rod, a nut, a first guide rail, a third supporting rod, a clamping ring, a top cylinder, a fourth supporting rod and a fixing module, the planet shaft is mounted on the end face of the sleeve through a bearing, the sleeve is coaxially mounted on the inner circumferential surface of the fixing ring through the bearing and rotates along the inner circumferential surface, the fixing ring is fixed with one end of the second supporting rod, and the other end of the second supporting rod is fixed with the supporting plate; the outer periphery of rand is equipped with the screw thread, its with nut threaded connection, the nut is equipped with first guide hole, be equipped with in the first guide hole along its first guide rail that removes, the tip of first guide rail with the backup pad is fixed, and the surface of nut is fixed with the one end of third bracing piece, the other end of third bracing piece with the outer periphery of rand is fixed, the interior periphery of rand encircle with in the ring groove that the outer periphery of a top section of thick bamboo was seted up, the one end of a top section of thick bamboo with the one end of fourth bracing piece is fixed, the other end of a top section of thick bamboo with fixed module is fixed, fixed module is used for fixed pjncture needle.
The invention relates to an epidural puncture needle feeding device for anesthesia department, wherein a fixing module is a spring frame and clamps a puncture needle.
The invention relates to an epidural puncture needle-inserting device for anesthesia department, wherein a fixing module is a magnet and adsorbs a puncture needle.
The invention relates to an epidural puncture needle feeding device for anesthesia department, wherein a fixing module is a hard rod which is fixed with a puncture needle through glue.
The invention relates to an epidural puncture needle feeding device for anesthesia department, wherein a throwing disc mechanism of the needle feeding mechanism comprises arc-shaped throwing rods, springs and clamping teeth, at least three arc-shaped throwing rods are uniformly distributed along the circumferential direction of a motor, one end of each arc-shaped throwing rod is hinged with the outer circumferential surface of an output shaft of the motor, the other end of each arc-shaped throwing rod can be arranged among the at least three clamping teeth, the at least three clamping teeth are fixed along the other end of a top cylinder and uniformly distributed along the circumferential direction of the top cylinder, the middle part of each arc-shaped throwing rod is fixed with one end of one spring, and the other end of the spring is fixed with the outer circumferential surface of the output shaft of the motor.
The invention relates to an epidural puncture needle feeding device for anesthesia department, wherein an olive-shaped balancing weight is fixed at the end part of an arc-shaped throwing rod, and the circumferential surface of the balancing weight is in lap joint with a top cylinder.
The invention relates to a needle inserting method of an epidural puncture needle inserting device in an anesthesia department, which comprises the following steps:
step 1, the needle head of a puncture needle is opposite to a puncture point, the needle inserting angle is adjusted according to a central approach or a lateral central approach, the inclined plane of the needle head of the puncture needle is almost parallel to the trend of ligamentum flavum, the distance between the needle head of the puncture needle and the puncture point is 3-10 cm, and a support plate is fixed;
step 2, starting a motor to rotate to a preset threshold value, continuing non-spiral needle insertion when the arc throwing rod is not in contact with the top cylinder and the distance between the needle head of the puncture needle and a puncture point is larger than 1 cm, and otherwise increasing the rotating speed of the motor and repeating the step 2;
step 3, when the inclined plane of the needle head of the puncture needle reaches the ligamentum flavum, pulling out the needle core of the puncture needle, if the output shaft of the motor continues to rotate and the arc-shaped throwing rod is in lap joint with the ejector sleeve, enabling the ejector sleeve and the output shaft of the motor to rotate synchronously, when the spiral needle insertion of the puncture needle is realized, if the output shaft of the motor does not continue to rotate, manually adjusting the inclined plane of the needle head of the puncture needle to be approximately vertical to the trend of the ligamentum flavum, restarting the motor, and enabling the rotating speed of the motor to be lower than a preset threshold value;
step 4, dripping a drop of water at the needle tail of the puncture needle, and stopping needle insertion until the water is sucked by the puncture needle;
and 5, inserting the puncture needle into the catheter to the body of the user, and then pulling out the puncture needle.
The epidural puncture needle feeding device for the anesthesia department is different from the prior art in that the epidural puncture needle feeding device for the anesthesia department enables a puncture needle to realize non-rotary needle feeding and rotary needle feeding through the needle feeding mechanisms at different rotating speeds of the same motor, so that the trouble of independently configuring two mechanisms to realize needle feeding and drive the puncture needle to rotate is avoided, the needle feeding process is simplified, and semi-automatic needle feeding is realized; in addition, the support plate can be used for fixing in the needle inserting process, so that the tissue damage of a patient caused by twisting and shaking of medical staff in the needle inserting process can be avoided.
The epidural puncture needle inserting device for the anesthesia department is further described with reference to the attached drawings.
Drawings
FIG. 1 is a front view of an epidural puncture needle inserting device for anesthesia department;
FIG. 2 is an enlarged view of a portion of the change in motion state of FIG. 1;
FIG. 3 is a partial right side view of FIG. 2;
FIG. 4 is an enlarged fragmentary view of the intermediate portion of FIG. 1;
FIG. 5 is a modified view of the structure of FIG. 4;
fig. 6 is a partially enlarged view of fig. 2.
Detailed Description
As shown in figures 1-6, referring to figures 1, 2 and 3, the epidural puncture needle inserting device for anesthesia department comprises
A support plate 100;
a puncture needle 200, the needle head of which is a bevel needle head;
the needle inserting mechanism 300 is disposed on the supporting plate 100 to move the puncture needle 200, the motor 301 drives the screw mechanism 320 through the planetary gear set 310 to push the puncture needle 200 to insert, and the motor 301 adjusts the rotation speed to drive the puncture needle 200 to insert in a rotating manner through the disc throwing mechanism 330.
According to the invention, the non-rotary needle insertion and the rotary needle insertion of the puncture needle 200 are realized by the needle insertion mechanism 300 at different rotating speeds of the same motor 301, so that the trouble of independently configuring two mechanisms to realize the needle insertion and drive the puncture needle 200 to rotate is avoided, the needle insertion process is simplified, and the semi-automatic needle insertion is realized; in addition, the support plate 100 can be used for fixing during the needle insertion process, so that the tissue damage of the patient caused by twisting and shaking of the medical staff during the needle insertion can be avoided.
When the rotation speed of the motor 301 is relatively high and the puncture needle 200 is inserted in a non-rotating manner, the needle inserting mechanism 300 is also configured with the torque of the motor 301 and the angle of the inclined plane of the needle head of the puncture needle 200 so that the needle head of the puncture needle 200 is approximately parallel to the ligamentum flavum, and the motor cannot rotate continuously due to the resistance of the ligamentum flavum, and at the moment, the resistance-free injection can be used for testing whether the ligamentum flavum is reached. If yes, a part of the needle is withdrawn, or the rotation speed is directly reduced so that the disc throwing mechanism can drive the puncture needle 200 to continuously insert the needle in a spiral manner by the motor 301 through the rotation of the motor 301.
Of course, in the above process, the rotation speed of the motor 301 may also be directly reduced due to the action of the ligamentum flavum, so that the disc throwing mechanism 330 directly drives the puncture needle 200 to insert the needle spirally, and at this time, the rotation speed of the motor 301 should be reduced, so as to reduce the needle inserting speed at this time.
The reduction ratio of the planetary gear set 310 should be relatively large, that is, the rotation speed of the planetary gear 312 during revolution should be much less than the rotation speed of the output shaft 302 of the motor 301, so as to reduce the needle insertion speed, and correspondingly increase the rotation speed of the flail disk mechanism 330 driven by the output shaft 302 of the motor 301, so that the flail disk mechanism 330 does not drive the puncture needle 200 to rotate smoothly, and the puncture needle 200 reaches the ligamentum flavum.
Wherein, the supporting plate 100 can be fixed by directly holding by medical staff, and when holding the supporting plate 100, it is better to rely on a fixed frame to avoid shaking or unnecessary twisting.
The supporting plate 100 may also be fixed to the frame or the fixing frame 101.
The fixing frame 101 is fixed with the lifting rod 103 through a first bolt 102 and a first screw hole arranged on the lifting rod 103, and the first bolt 102 is fixed by loosening the first bolt 102 and then adjusting the pitch angle of the fixing frame 101; a second bolt 104 is disposed at the lower end of the lifting rod 103, a plurality of second screw holes 105 are disposed on a second guide rail 106 along which the lifting rod 103 moves, and the height of the lifting rod 103 is adjusted by screwing the second bolt 104 to the second screw holes 105 having different heights, so that the height of the fixing frame 101 is adjusted, and the height and the pitch angle of the fixing frame 101 can be adjusted according to the requirements of the operation, such as a lateral median approach or a median approach. Wherein, the lower end of the second guide rail 106 is fixed with the base 107.
Wherein, the power module of motor 301 can be connected with user terminal through wireless communication module, and user terminal can adjust motor 301's rotational speed, moment of torsion, direction of rotation at will to avoid the needle inserting dynamics not enough or the needle inserting is too much.
The motor 301 can make the torque of the motor substantially constant no matter whether the rotating speed exceeds a preset threshold value or not by adjusting the current and the voltage of the power supply module, so that the needle inserting force is relatively constant and cannot be too large or too small.
The needle inserting force of the motor 301 can be just enough to reduce the motor speed to below the preset threshold value when the needle head of the puncture needle 200 contacts with the ligamentum flavum, even the rotating speed of the motor 301 is reduced to 0, and the ligamentum flavum can be best punctured by rotating the inclined plane of the needle head to be approximately perpendicular to the ligamentum flavum again. The needle insertion force of the motor 301 needs to be adjusted on site or obtained according to limited experiments.
The needle inserting force is preferably 0.5N-100N, preferably 20N, and the preferable force depends on the sharpness of the needle head.
Wherein the needle 200 may be provided with a stylet or catheter therein prior to reaching the ligamentum flavum.
As a further explanation of the present embodiment, referring to fig. 3 and 4, the planetary gear set 310 of the needle insertion mechanism 300 includes a sun gear 311, a planetary gear 312, a ring gear 313, a planetary shaft 314, and a first support rod 315, wherein the sun gear 311 is coaxially fixed with the output shaft 302 of the motor 301, the motor 301 is fixed with the support plate 100, the sun gear 311 is engaged with at least three planetary gears 312, the planetary shaft 314 is coaxially fixed with the planetary gears 312, the outer circumferential surface of the planetary gear 312 is engaged with the inner circumferential surface of the ring gear 313, the ring gear 313 is fixed with one end of the first support rod 315, and the other end of the ring gear 313 is fixed with the support plate 100;
the screw mechanism 320 comprises a sleeve 321, a fixed ring 322, a second support bar 323, a nut 324, a first guide rail 325, a third support bar 326, a collar 327, a top cylinder 328, a fourth support bar 329, and a fixed module 355, wherein the planet shaft 314 is mounted on the end surface of the sleeve 321 through a bearing, the sleeve 321 is coaxially mounted on the inner circumferential surface of the fixed ring 322 through a bearing and rotates along the inner circumferential surface, the fixed ring 322 is fixed with one end of the second support bar 323, and the other end of the second support bar 323 is fixed with the support plate 100; the outer circumferential surface of the collar 327 is provided with threads, the collar is in threaded connection with the nut 324, the nut 324 is provided with a first guide hole 396, a first guide rail 325 which moves along the first guide hole 396 is arranged in the first guide hole 396, the end of the first guide rail 325 is fixed with the support plate 100, the surface of the nut 324 is fixed with one end of a third support rod 326, the other end of the third support rod 326 is fixed with the outer circumferential surface of the collar 327, the inner circumferential surface of the collar 327 surrounds an annular clamping groove 397 which is formed in the outer circumferential surface of the top cylinder 328, one end of the top cylinder 328 is fixed with one end of a fourth support rod 329, the other end of the top cylinder 328 is fixed with the fixing module 355, and the fixing module 355 is used for fixing the puncture needle 200.
The planetary gear set 310 is used for reducing the speed of the output shaft 302 of the motor 301, so that the revolution of the planet shaft 314 of the planet gear 312 is utilized to drive the sleeve 321 to rotate, and the effect that the rotating speed of the sleeve 321 is slower than that of the output shaft 302 of the motor 301 is realized; the sleeve 321 is in threaded connection with the nut 324 as a screw in the screw mechanism 320, so that the nut 324 moves linearly through the first guide rail 325, the nut 324 moves linearly through the third support rod 326 to drive the collar 327 to move linearly, and the collar 327 moves linearly through the top cylinder 328, the fourth support rod 329 and the fixing module 355 to enable the puncture needle 200 to move linearly, so that the needle insertion without rotating the puncture needle 200 is realized when the rotation speed of the output shaft 302 of the motor 301 is higher than a preset threshold value.
The disc throwing mechanism 330 may be any mechanism in the prior art, for example, a disc throwing mechanism for preventing an elevator car from sliding down too fast, and mainly functions to drive the top barrel 328 to rotate together when the rotation speed of the output shaft 302 of the motor 301 is lower than a preset threshold value, so as to realize low-speed spiral needle insertion.
The fourth support bar 329 is used to facilitate the removal of the needle core, so the length of the fourth support bar 329 is longer than the length of the needle core, and even longer than the length of the puncture needle 200, which is not shown for the sake of compactness.
According to the invention, through the axial movement of the collar 327 driven by the axial movement of the nut 324, the top cylinder 328 is driven by the annular clamping groove 397 to move axially along with the collar, and can freely rotate along the circumferential direction of the top cylinder 328.
The outer peripheral surface of the sleeve 321 is fixed with clamping rings 395 at two sides of the fixing ring 322, and the clamping rings 395 are used for clamping the fixing ring 322 to prevent the sleeve 321 from moving axially when rotating along the inner peripheral surface of the fixing ring 322.
Wherein, at least three planet gears 312 are evenly distributed along the circumferential direction of the sun gear 311;
wherein, the number of the planet gears 312 can be 2, 3, 4, 5, 6, 7, 8, 9 and 10.
The pitch circle diameter of the planetary gear 312 is larger than that of the sun gear, so as to ensure that the revolution speed of the planetary gear 312 is slower than the rotation speed of the output shaft 302 of the motor 301.
Wherein, the ratio of the pitch circle of the planet gear 312 to the pitch circle of the sun gear 311 is: 2-100: 1, preferably 3: 1. That is, when the above-described pitch diameter ratio is satisfied, the revolution speed of the planetary gear 312 is slower than the revolution speed of the sun gear 311.
In order to prevent the planetary gears 312 from being released from the ring gear 313 and the sun gear 311 and losing their mesh without being fixed during the revolution, a clamp plate 391 capable of sandwiching the planetary gears 312 is disposed on the inner surface of the ring gear 313.
Of course, referring to fig. 5, the ring gear 313 may be fixed with an annular guide 392, and the planet shafts 314 of the planet gears 312 rotate along the annular guide 392 and are not easily separated from the ring gear 313.
The end of the planet shaft 314 and the ring-shaped guide rail 392 may be fixed in a manner that the ring-shaped guide rail is provided with a ring-shaped dovetail groove 393, the end of the planet shaft 314 is provided with a slider 394 with a truncated cone-shaped end surface, and the slider 394 with the truncated cone-shaped end surface is arranged in the dovetail groove 393.
For further explanation of this embodiment, referring to fig. 3, the mounting module 355 is a spring rack that holds the lancet 200.
Referring to fig. 3, in order to keep the puncture needle 200 in the middle of the fixing module 355 to be coaxially disposed with the output shaft 302 of the motor 301, when the fixing module 355 is a spring holder, a circular groove may be disposed in the middle thereof to fix the puncture needle 200 in a central position.
The puncture needle is detachably fixed by the clamping force of the spring frame, so that the puncture needle 200 is convenient to replace, wherein the clamping force of the spring frame is large enough to prevent the puncture needle 200 from loosening in the needle inserting process.
Of course, referring to fig. 3, one variation of the securing module 355 could also be: the fixing module 355 is a magnet to attract the puncture needle 200.
The puncture needle 200 is detachably fixed by the adsorption force of the magnet, so that the puncture needle 200 is convenient to replace, wherein the adsorption force of the magnet is large enough to prevent the puncture needle 200 from loosening in the needle inserting process.
Of course, referring to fig. 3, one variation of the securing module 355 could also be: the fixing module 355 is a hard rod, and is fixed to the puncture needle 200 by glue.
The puncture needle 200 is detachably fixed through the adhesive force of the glue, so that the puncture needle 200 is convenient to replace, wherein the adhesive force of the glue is large enough to prevent the puncture needle 200 from loosening in the needle inserting process.
The fixing module 355 may be a spring rack to clamp the puncture needle 200, and of course, the fixing module 355 may also be a magnet to adsorb the puncture needle 200, and of course, the fixing module 355 may also be a hard rod fixed to the puncture needle 200 by welding, glue, or hook and loop fastener.
In order to keep the puncture needle 200 in the middle of the fixing module 355 to be coaxially disposed with the output shaft 302 of the motor 301, referring to fig. 3, a circular groove may be disposed in the middle of the fixing module 355 to fix the puncture needle 200 in the center position when the fixing module 355 is a spring holder.
As a further explanation of this embodiment, referring to fig. 4, 5, and 6, the flail disk mechanism 330 of the needle inserting mechanism 300 includes arc-shaped flail rods 331, springs 332, and latches 333, at least three arc-shaped flail rods 331 are uniformly distributed along the circumferential direction of the motor 301, one end of each arc-shaped flail rod 331 is hinged to the outer circumferential surface of the output shaft 302 of the motor 301, the other end of each arc-shaped flail rod 331 is capable of being disposed between at least three latches 333, the at least three latches 333 are fixed along the other end of the top cylinder 328 and uniformly distributed along the circumferential direction thereof, the middle of each arc-shaped flail rod 331 is fixed to one end of one spring 332, and the other end of each spring 332 is fixed to the outer circumferential surface of the output shaft 302 of the motor 301.
According to the invention, the disc throwing mechanism 330 can give the arc throwing rod 331 through the rotating speed of the output shaft 302 of the motor 301 at different rotating speeds, and the arc throwing rod 331 is thrown to a state incapable of being meshed with the latch 333 through centrifugal force, so that when the rotating speed of the output shaft 302 of the motor 301 is higher than a preset threshold value, the output shaft 302 of the motor 301 cannot drive the top cylinder 328 to rotate, and the needle insertion mode is only non-rotary needle insertion.
Wherein, the number of the arc-shaped swinging rods 331 can be: 3. 4, 5, 6, 7, 8, 9, 10 or more.
The number of the latch teeth 333 may be: 3. 4, 5, 6, 7, 8, 9, 10 or more.
The elastic force of the spring 332 may be set such that, when the rotation speed of the output shaft 302 of the motor 301 is higher than a preset threshold, the spring 332 cannot pull the centrifugal force of the arc-shaped throwing rod 331, so that the arc-shaped throwing rod 331 is thrown out, and finally can abut against the inner circumferential surface of the sleeve 321 and rotate, wherein the surface of the arc-shaped throwing rod 331 is smooth enough to cause that the rotation of the sleeve 321 cannot be driven or changed when the arc-shaped throwing rod 331 abuts against the sleeve 321; at the moment, the output shaft 302 of the motor 301 cannot drive the top cylinder 328 to rotate, so that the puncture needle 200 cannot rotate; when the rotation speed of the output shaft 302 of the motor 301 is lower than or equal to the preset threshold, the elastic force of the spring 332 overcomes the centrifugal force of the arc-shaped swing rod 331 to make the other end of the arc-shaped swing rod 331 contact the outer circumferential surface of the top cylinder 328, and the arc-shaped swing rod 331 makes the output shaft 302 of the motor 301 drive the top cylinder 328 to synchronously rotate through the cooperation with the latch 333, so that the puncture needle 200 synchronously rotates, and the screw mechanism 320 realizes the spiral needle insertion.
The preset threshold value can be 100 r/min-2000 r/min, preferably 300r/min, the spiral needle inserting speed cannot be too high to master at the rotating speed, and on the contrary, a drop of water can be dripped at the tail of the puncture needle 200 at any time under the condition that the motor 301 is not powered off and continuously rotates, so that whether the ligamentum flavum is punctured or not can be detected.
As a further explanation of this embodiment, referring to fig. 4, 5 and 6, a football-shaped counterweight 334 is fixed at the end of the arc-shaped swinging rod 331, and the circumferential surface of the counterweight 334 overlaps the top cylinder 328.
The football-shaped balancing weight 334 is overlapped with the top cylinder 328, so that the ball-shaped balancing weight can conveniently extend into the plurality of latch teeth 333 and can be thrown out of the plurality of latch teeth 333 at will.
The invention relates to a needle inserting method of an epidural puncture needle inserting device in an anesthesia department, which comprises the following steps:
step 1, the needle head of a puncture needle 200 is opposite to a puncture point, the needle inserting angle is adjusted according to a median approach or a lateral median approach, the inclined plane of the needle head of the puncture needle 200 is almost parallel to the trend of ligamentum flavum, the distance between the needle head of the puncture needle 200 and the puncture point is 3-10 cm, and a support plate 100 is fixed;
step 2, starting the motor 301 to rotate to a preset threshold value, when the arc throwing rod 331 is not in contact with the top cylinder 328 and the distance between the needle head of the puncture needle 200 and a puncture point is greater than 1 cm, continuing inserting the needle in a non-spiral manner, otherwise, increasing the rotating speed of the motor 301 and repeating the step 2;
step 3, when the inclined plane of the needle head of the puncture needle 200 reaches the ligamentum flavum, pulling out the needle core of the puncture needle 200, if the output shaft 302 of the motor 301 continues to rotate and the arc throwing rod 331 is in lap joint with the top cylinder 328, so that the top cylinder 328 and the output shaft 302 of the motor 301 synchronously rotate, when the spiral needle insertion of the puncture needle 200 is realized, if the output shaft 302 of the motor 301 does not continue to rotate, manually adjusting the inclined plane of the needle head of the puncture needle 200 to be approximately vertical to the trend of the ligamentum flavum, restarting the motor 301, and enabling the rotating speed of the motor 301 to be lower than a preset threshold value, so as to;
step 4, dripping a drop of water at the tail of the puncture needle 200, and stopping needle insertion until the water is sucked by the puncture needle;
step 5, the needle 200 is inserted into the catheter into the user's body, and the needle is subsequently withdrawn.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.
Claims (8)
1. The utility model provides an epidural puncture needle feeding device of department of anesthesia which characterized in that: comprises that
A support plate (100);
a puncture needle (200) with a bevel needle head;
the needle inserting mechanism (300) is arranged on the supporting plate (100) to drive the puncture needle (200) to move, the motor (301) drives the screw rod mechanism (320) through the planetary gear set (310) to push the puncture needle (200) to insert, and the motor (301) drives the puncture needle (200) to insert in a rotating mode through the disc throwing mechanism (330) by adjusting the rotating speed.
2. The epidural puncture needle device for anesthesia department according to claim 1, wherein: the planetary gear set (310) of the needle inserting mechanism (300) comprises a sun gear (311), a planetary gear (312), a gear ring (313), a planetary shaft (314) and a first support rod (315), wherein the sun gear (311) is coaxially fixed with an output shaft (302) of the motor (301), the motor (301) is fixed with the support plate (100), the sun gear (311) is meshed with at least three planetary gears (312), the planetary shaft (314) is coaxially fixed on the planetary gear (312), the outer circumferential surface of the planetary gear (312) is meshed with the inner circumferential surface of the gear ring (313), the gear ring (313) is fixed with one end of the first support rod (315), and the other end of the gear ring (313) is fixed with the support plate (100);
the screw rod mechanism (320) comprises a sleeve (321), a fixing ring (322), a second supporting rod (323), a nut (324), a first guide rail (325), a third supporting rod (326), a clamping ring (327), a top cylinder (328), a fourth supporting rod (329) and a fixing module (355), the planet shaft (314) is installed on the end face of the sleeve (321) through a bearing, the sleeve (321) is coaxially installed on the inner circumferential surface of the fixing ring (322) through the bearing and rotates along the inner circumferential surface, the fixing ring (322) is fixed with one end of the second supporting rod (323), and the other end of the second supporting rod (323) is fixed with the supporting plate (100); the outer circumferential surface of the collar (327) is provided with threads which are in threaded connection with the nut (324), the nut (324) is provided with a first guide hole (396), a first guide rail (325) moving along the first guide hole (396) is arranged in the first guide hole (396), the end of the first guide rail (325) is fixed with the support plate (100), the surface of the nut (324) is fixed with one end of the third support bar (326), the other end of the third supporting rod (326) is fixed with the outer circumferential surface of the clamping ring (327), the inner circumferential surface of the clamping ring (327) is surrounded in an annular clamping groove (397) which is formed in the outer circumferential surface of the top cylinder (328), one end of the top cylinder (328) is fixed with one end of the fourth supporting rod (329), the other end of the top cylinder (328) is fixed with the fixing module (355), and the fixing module (355) is used for fixing the puncture needle (200).
3. The epidural puncture needle device for anesthesia department according to claim 2, wherein: the securing module (355) is a spring rack that holds the piercing needle (200).
4. The epidural puncture needle device for anesthesia department according to claim 2, wherein: the fixing module (355) is a magnet to adsorb the puncture needle (200).
5. The epidural puncture needle device for anesthesia department according to claim 2, wherein: the fixing module (355) is a hard rod which is fixed with the puncture needle (200) through glue.
6. The epidural puncture needle device for anesthesia department according to claim 5, wherein: the disc throwing mechanism (330) of the needle feeding mechanism (300) comprises arc throwing rods (331), springs (332) and clamping teeth (333), wherein at least three arc throwing rods (331) are arranged along the circumferential direction of the motor (301) in an evenly distributed mode, one end of each arc throwing rod (331) is hinged to the outer circumferential surface of an output shaft (302) of the motor (301), the other end of each arc throwing rod (331) is hinged to the outer circumferential surface of the other end of the corresponding clamping tooth (333) in an allocated mode, the other end of each arc throwing rod (331) is fixed to one end of one spring (332), and the other end of each spring (332) is fixed to the outer circumferential surface of the output shaft (302) of the motor (301).
7. The epidural puncture needle device for anesthesia department according to claim 6, wherein: the end part of the arc-shaped swinging rod (331) is fixed with a football-shaped balancing weight (334), and the circumferential surface of the balancing weight (334) is lapped with the top cylinder (328).
8. The needle inserting method of the epidural puncture needle inserting device for the anesthesia department as claimed in claim 7, which is characterized by comprising the following steps:
step 1, the needle head of a puncture needle (200) is opposite to a puncture point, the needle inserting angle is adjusted according to a median approach or a lateral median approach, the inclined plane of the needle head of the puncture needle (200) is almost parallel to the trend of ligamentum flavum, the distance between the needle head of the puncture needle (200) and the puncture point is 3-10 cm, and a support plate (100) is fixed;
step 2, starting the motor (301) to rotate to a preset threshold value, when the arc-shaped swinging rod (331) is not in contact with the top cylinder (328) and the distance between the needle head of the puncture needle (200) and a puncture point is larger than 1 cm, continuing non-spiral needle insertion, otherwise, increasing the rotating speed of the motor (301) and repeating the step 2;
step 3, when the inclined plane of the needle head of the puncture needle (200) reaches ligamentum flavum, pulling out the needle core of the puncture needle (200), if the output shaft (302) of the motor (301) continues to rotate and the arc-shaped swinging rod (331) is in lap joint with the top cylinder (328), enabling the top cylinder (328) and the output shaft (302) of the motor (301) to synchronously rotate, and when the spiral needle feeding of the puncture needle (200) is realized, if the output shaft (302) of the motor (301) does not continue to rotate, manually adjusting the inclined plane of the needle head of the puncture needle (200) to be approximately vertical to the trend of the ligamentum flavum, restarting the motor (301), and enabling the rotating speed of the motor (301) to be lower than a preset threshold value, so as to;
step 4, dripping a drop of water at the needle tail of the puncture needle (200), and stopping needle insertion until the water is sucked by the puncture needle;
step 5, inserting the puncture needle (200) into the catheter to the body of the user, and then extracting the puncture needle.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010432616.1A CN111588447B (en) | 2020-05-20 | 2020-05-20 | Epidural puncture needle inserting device for anesthesia department |
| CN202110675128.8A CN113349894A (en) | 2020-05-20 | 2020-05-20 | Needle inserting method of epidural puncture needle inserting device for anesthesia department |
| CN202110672231.7A CN113349893A (en) | 2020-05-20 | 2020-05-20 | Epidural puncture needle inserting device for anesthesia department |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010432616.1A CN111588447B (en) | 2020-05-20 | 2020-05-20 | Epidural puncture needle inserting device for anesthesia department |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110675128.8A Division CN113349894A (en) | 2020-05-20 | 2020-05-20 | Needle inserting method of epidural puncture needle inserting device for anesthesia department |
| CN202110672231.7A Division CN113349893A (en) | 2020-05-20 | 2020-05-20 | Epidural puncture needle inserting device for anesthesia department |
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| Publication Number | Publication Date |
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| CN111588447A true CN111588447A (en) | 2020-08-28 |
| CN111588447B CN111588447B (en) | 2021-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110672231.7A Withdrawn CN113349893A (en) | 2020-05-20 | 2020-05-20 | Epidural puncture needle inserting device for anesthesia department |
| CN202110675128.8A Withdrawn CN113349894A (en) | 2020-05-20 | 2020-05-20 | Needle inserting method of epidural puncture needle inserting device for anesthesia department |
| CN202010432616.1A Expired - Fee Related CN111588447B (en) | 2020-05-20 | 2020-05-20 | Epidural puncture needle inserting device for anesthesia department |
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| CN202110672231.7A Withdrawn CN113349893A (en) | 2020-05-20 | 2020-05-20 | Epidural puncture needle inserting device for anesthesia department |
| CN202110675128.8A Withdrawn CN113349894A (en) | 2020-05-20 | 2020-05-20 | Needle inserting method of epidural puncture needle inserting device for anesthesia department |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113712643A (en) * | 2021-09-15 | 2021-11-30 | 哈尔滨理工大学 | Flexible needle puncture mechanism that split type supported |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113952008B (en) * | 2021-12-23 | 2022-05-24 | 真健康（北京）医疗科技有限公司 | Cross-drive type puncture needle inserting mechanism and needle puncturing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050165281A1 (en) * | 2004-01-27 | 2005-07-28 | Sundaram Ravikumar | Surgical retractor apparatus for use with a surgical port |
| CN106137342A (en) * | 2016-08-08 | 2016-11-23 | 哈尔滨理工大学 | A kind of supersonic vibration punctures soft tissue device and method |
| CN108670375A (en) * | 2018-07-16 | 2018-10-19 | 天津赛德生物制药有限公司 | A kind of prostate radiation seeds implanted system of biplane ultrasonic guiding |
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2020
- 2020-05-20 CN CN202110672231.7A patent/CN113349893A/en not_active Withdrawn
- 2020-05-20 CN CN202110675128.8A patent/CN113349894A/en not_active Withdrawn
- 2020-05-20 CN CN202010432616.1A patent/CN111588447B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050165281A1 (en) * | 2004-01-27 | 2005-07-28 | Sundaram Ravikumar | Surgical retractor apparatus for use with a surgical port |
| CN106137342A (en) * | 2016-08-08 | 2016-11-23 | 哈尔滨理工大学 | A kind of supersonic vibration punctures soft tissue device and method |
| CN108670375A (en) * | 2018-07-16 | 2018-10-19 | 天津赛德生物制药有限公司 | A kind of prostate radiation seeds implanted system of biplane ultrasonic guiding |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113712643A (en) * | 2021-09-15 | 2021-11-30 | 哈尔滨理工大学 | Flexible needle puncture mechanism that split type supported |
| CN113712643B (en) * | 2021-09-15 | 2024-03-22 | 哈尔滨理工大学 | Split-type supported flexible needle puncture mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113349893A (en) | 2021-09-07 |
| CN111588447B (en) | 2021-07-23 |
| CN113349894A (en) | 2021-09-07 |
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