CN112401986B - Endoscope puncture needle with quantitative medicine feeding function - Google Patents
Endoscope puncture needle with quantitative medicine feeding function Download PDFInfo
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- CN112401986B CN112401986B CN202011200970.8A CN202011200970A CN112401986B CN 112401986 B CN112401986 B CN 112401986B CN 202011200970 A CN202011200970 A CN 202011200970A CN 112401986 B CN112401986 B CN 112401986B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3478—Endoscopic needles, e.g. for infusion
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3403—Needle locating or guiding means
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3403—Needle locating or guiding means
- A61B2017/3405—Needle locating or guiding means using mechanical guide means
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Abstract
The invention discloses an endoscope puncture needle with a quantitative medicine feeding function, which belongs to the technical field of puncture needles and comprises a needle seat, a needle sleeve and an inner needle, wherein the needle sleeve is clamped in the needle seat, the inner needle is arranged in the needle sleeve, the outer side of the inner needle is fixedly connected with a plastic sleeve, the plastic sleeve is arranged in the needle sleeve, the plastic sleeve is detachably connected with the needle sleeve through a clamping mechanism, an extrusion mechanism is arranged on the outer side of the needle sleeve, and a plurality of gear mechanisms are arranged on the outer side of the plastic sleeve. According to the invention, by arranging the needle sleeve, the plastic sleeve and the inner needle, the inner needle is controlled to retract into the plastic sleeve to be hidden after being used, the plastic sleeve can be conveniently taken out of the inner needle, the plastic sleeve and the inner needle can be stably fixed in the needle sleeve to be stably used under the action of the inner needle when the inner needle retracts or is taken out, and the plastic sleeve and the inner needle are very convenient to install and take out, so that the inner needle can be quickly taken out after being used without discarding the needle sleeve and a needle seat, the practicability of the scheme is greatly improved, and the medical cost is reduced.
Description
Technical Field
The invention belongs to the technical field of puncture needles, and particularly relates to an endoscope puncture needle with a quantitative drug delivery function.
Background
The puncture needle belongs to one kind of medical apparatus and instruments, can puncture human tissues and trachea, guide the trachea and inject drugs, is generally applied to minimally invasive surgery, can be used for treating intervertebral disc puncture, joint puncture, muscle pain point puncture, drug injection and the like, and becomes an essential medical apparatus and instrument in medical means due to the special action of the puncture needle.
However, the puncture needle in the prior art is generally disposable, the needle can not be used continuously after being polluted after puncturing human tissues, the needle needs to be discarded and can not be reused at the moment, structures such as a needle seat and the like are not polluted, therefore, the needle seat and the like are discarded together, the resource waste can be caused, the medical cost is improved, meanwhile, the existing puncture needle is used for performing puncture operation after a doctor holds the angle of observation by naked eyes, the accuracy of the puncture mode is low, the doctor needs to consume a large amount of energy when observing, the puncture precision is low, the human body is easy to be damaged, and the puncture needle is injected after a certain amount of medicine is measured by the doctor when the medicine is injected into the puncture needle, and the operation.
Disclosure of Invention
The invention aims to: the endoscope puncture needle with the quantitative medicine feeding function is provided for solving the problems that the existing puncture needle is low in puncture precision, cannot be recycled and cannot feed medicine quantitatively.
In order to achieve the purpose, the invention adopts the following technical scheme:
an endoscope puncture needle with a quantitative drug delivery function comprises a needle seat, a needle sleeve and an inner needle, wherein the needle sleeve is clamped in the needle seat, the inner needle is arranged in the needle sleeve, a plastic sleeve is fixedly connected to the outer side of the inner needle and arranged in the needle sleeve, the plastic sleeve is detachably connected with the needle sleeve through a clamping mechanism, an extrusion mechanism is arranged on the outer side of the needle sleeve, a plurality of gear mechanisms are arranged on the outer side of the plastic sleeve and are uniformly arranged in a circular ring shape, a drug injection mechanism is fixedly connected to the upper surface of the needle seat, the back surface of the drug injection mechanism is communicated with a catheter, the other end of the catheter is communicated with a flow guide mechanism, the flow guide mechanism is arranged at the top end of the inner needle, a silica gel pad is fixedly connected to the right side surface of the needle seat and is attached to the left side surface of a circular plate, a rotating shaft penetrating through the silica gel pad is fixedly connected to the right side surface of the needle seat, and the rotating shaft is sleeved in a bearing clamped on the left side surface of the circular plate, the right side surface of the circular plate is provided with a vertical mechanism, and the lower surface of the circular plate is fixedly connected with a parallel plate.
As a further description of the above technical solution:
the upper surface of silica gel pad is fixedly connected with first pointer, and the position that the left surface of plectane corresponds first pointer is provided with the arc scale.
As a further description of the above technical solution:
the injection mechanism comprises a medicine cylinder fixedly connected to the upper surface of the needle seat, a partition is fixedly connected in the medicine cylinder, a first piston and a second piston are arranged in the medicine cylinder, the first piston and the second piston are respectively located on the left side and the right side of the partition, a push rod is fixedly connected to the upper surface of the first piston, and the top end of the push rod penetrates through the upper surface of the medicine cylinder and is fixedly connected with a push block.
As a further description of the above technical solution:
the lower surface of baffle and the lower surface of cartridge case inner wall possess certain interval, the lower surface of baffle is provided with the running roller, the metal wire has been walked around in the running roller outside, the one end of metal wire and the lower fixed surface of first piston are connected, the other end of metal wire and the lower fixed surface of second piston are connected, the laminating of second piston is at the upper surface of retaining ring, retaining ring fixed connection is in the cartridge case, the position that the upper surface of cartridge case corresponds the second piston is provided with the medicine mouth, the back intercommunication of cartridge case has the one end of pipe, the pipe is located the upside of second piston, the right flank of cartridge case is provided with the visual window, be provided with the scale on the visual window.
As a further description of the above technical solution:
the utility model discloses a medicine injection needle, including the guide mechanism, the guide mechanism includes the guide ring with the pipe other end intercommunication, and the guide ring is hollow form, and the lower surface intercommunication of honeycomb duct has a plurality of injection needles, and the outside cover of injection needle is equipped with the silica gel circle, the medicine passageway has been seted up to the position that the upper surface of interior needle corresponds the injection needle, and the other end of leading the medicine passageway runs through the bottom of injecting interior needle.
As a further description of the above technical solution:
the front and the back of the inner needle are fixedly connected with sliding strips, and the sliding strips are slidably connected in sliding grooves formed in the inner wall of the plastic sleeve.
As a further description of the above technical solution:
clamping mechanism includes the retainer plate of fixed connection in the plastic sheath outside, and a plurality of cardboards of the lower fixed surface of retainer plate is connected with, and cardboard fixed connection is at the surface of plastic sheath, and the cardboard setting is in the draw-in groove, and a side at the fixed plate is seted up to the draw-in groove, and fixed plate fixed connection is on the inner wall of needle cover.
As a further description of the above technical solution:
the gear mechanism comprises a groove formed in the outer surface of the needle sleeve, a blocking piece is arranged in the groove, and the blocking piece is rotatably connected in the groove through a movable pin.
As a further description of the above technical solution:
perpendicular mechanism includes the magnetism board of inhaling of fixed connection at the plectane right flank, and magnetism board is located the upside of pivot, and the arc wall has been seted up to the right flank of magnetism board of inhaling, the right flank fixedly connected with U-shaped plate of plectane, U-shaped plate internal rotation are connected with the movable ball, and the lower fixed surface of movable ball is connected with the needle that falls, and the right flank fixedly connected with arc magnetic sheet of the needle that falls, the last fixed surface of movable ball is connected with the second pointer, and the right flank of plectane corresponds the position fixedly connected with index of second pointer.
As a further description of the above technical solution:
the extrusion mechanism establishes the position circle in the needle cover outside including the cover, and the screw thread has been seted up to the inner wall of position circle, and position circle threaded connection has seted up the ring channel at the surface of needle cover, and the lower surface of position circle is provided with the holding ring, is provided with the holding ring in the ring channel, and the outer fixed surface of holding ring is connected with a plurality of card balls, and the rotating groove has been seted up to the position that the ring channel inner wall corresponds the card ball, and the lower fixed surface of holding ring is connected with a plurality of extrusion pieces.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. according to the invention, by arranging the needle sleeve, the plastic sleeve and the inner needle, the inner needle is controlled to retract into the plastic sleeve to be hidden after being used, the plastic sleeve can be conveniently taken out of the inner needle, when the inner needle retracts or is taken out, the needle sleeve and the needle seat cannot be polluted under the isolation of the plastic sleeve, and by arranging the clamping mechanism, the plastic sleeve and the inner needle can be stably fixed in the needle sleeve for stable use under the action of the clamping mechanism and are very convenient to install and take out, so that the needle sleeve and the needle seat can be quickly taken out without discarding after the inner needle is used, the practicability of the scheme is greatly improved, and the medical cost is reduced.
2. According to the invention, by arranging the medicine injection mechanism, the catheter and the flow guide mechanism, a certain amount of medicine can be injected into the catheter under the action of the medicine injection mechanism, the medicine enters the inner needle through the flow guide mechanism to complete the medicine conveying, and the medicine injection amount can be adjusted according to the scales by setting the scales, so that the puncture needle can realize quantitative medicine injection, a doctor does not need to use an additional instrument to measure the medicine amount and then inject, and the operation of the doctor is greatly facilitated.
3. According to the invention, the circular plate and the rotating shaft are arranged, the needle base can rotate under the action of the circular plate and the rotating shaft, the rotating angle of the needle base can be measured under the action of the vertical mechanism, the first pointer and the scale, and finally the included angle between the bottom end of the inner needle and the horizontal position is measured, so that the injection angle measuring function can be realized, a doctor does not need to measure according to experience, the measuring precision is high, the injury to a patient can be reduced during puncture, and the energy consumption of the doctor is greatly reduced.
4. According to the invention, the extrusion mechanism and the gear mechanism are arranged, and the extrusion mechanism moves downwards to extrude the gear mechanism, so that the gear mechanism can effectively fix the inner needle, the inner needle is prevented from automatically pushing upwards, the stability of the inner needle is greatly improved, and accidents are avoided in the puncturing process.
5. According to the invention, the silica gel pad is arranged, so that the friction coefficient between the silica gel pad and the circular plate is relatively large, the needle seat can be stabilized and cannot shake randomly after rotating for a certain angle, and the parallel plates are arranged, so that the position of the needle seat can be measured by the parallel plates, and a doctor can continuously control the angle of the inner needle to facilitate puncture.
Drawings
FIG. 1 is a schematic perspective view of an endoscopic needle with a quantitative drug delivery function according to the present invention;
FIG. 2 is a schematic perspective view of an inner needle and a fluid guiding mechanism of an endoscopic needle with a quantitative drug administration function according to the present invention;
FIG. 3 is a schematic perspective view of a needle sheath and a fixing plate of an endoscopic puncture needle with quantitative drug delivery according to the present invention;
FIG. 4 is a schematic perspective view of a cross-section of a drug injection mechanism in an endoscopic needle with a quantitative drug administration function according to the present invention;
FIG. 5 is a schematic perspective view of a circular plate and a first pointer of an endoscopic needle with quantitative drug delivery according to the present invention;
FIG. 6 is a schematic perspective view of an extrusion mechanism of an endoscopic needle with a quantitative drug delivery function according to the present invention;
fig. 7 is a schematic perspective view of a vertical mechanism in an endoscopic puncture needle with a quantitative drug administration function according to the present invention.
Illustration of the drawings:
1. a needle seat; 2. a needle sleeve; 3. an inner needle; 4. a drug injection mechanism; 41. calibration; 42. a cartridge; 43. a push rod; 44. a medicine adding nozzle; 45. a first piston; 46. a roller; 47. a retainer ring; 48. a metal wire; 49. a second piston; 410. a partition plate; 5. a conduit; 6. a gear mechanism; 61. a movable pin; 62. a baffle plate; 63. a groove; 7. a silica gel pad; 8. a first pointer; 9. arc-shaped scales; 10. a circular plate; 11. a rotating shaft; 12. parallel plates; 13. a vertical mechanism; 131. a magnetic attraction plate; 132. a U-shaped plate; 133. an arc magnetic sheet; 134. a dropping needle; 135. indexes; 136. a second pointer; 137. a movable ball; 14. a clamping mechanism; 141. a stationary ring; 142. clamping a plate; 143. a fixing plate; 15. a flow guide mechanism; 151. a flow guide ring; 152. a medicine injection needle; 153. a silica gel ring; 16. a drug delivery channel; 17. a slide bar; 18. a plastic sheath; 19. an extrusion mechanism; 191. positioning rings; 192. an annular groove; 193. a thread; 194. blocking the ball; 195. a positioning ring; 196. and extruding the block.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-7, the present invention provides a technical solution: an endoscope puncture needle with quantitative drug delivery function comprises a needle base 1, a needle sleeve 2 and an inner needle 3, the needle holder 1 is internally clamped with a needle sleeve 2, the needle sleeve 2 is internally provided with an inner needle 3, the outer side of the inner needle 3 is fixedly connected with a plastic sleeve 18, the plastic sleeve 18 is arranged in the needle sleeve 2, the plastic sleeve 18 is detachably connected with the needle sleeve 2 through a clamping mechanism 14, the clamping mechanism 14 comprises a fixing ring 141 fixedly connected to the outer side of the plastic sleeve 18, a plurality of clamping plates 142 are fixedly connected to the lower surface of the fixing ring 141, the clamping plates 142 are fixedly connected to the outer surface of the plastic sleeve 18, the clamping plates 142 are arranged in clamping grooves, the clamping grooves are formed in one side surface of the fixing plate 143, the fixing plate 143 is fixedly connected to the inner wall of the needle sleeve 2, by arranging the clamping plate 142 and the clamping groove, the clamping plate 142 can be clamped in the clamping groove to complete the installation of the plastic sleeve 18, and the plastic sleeve 18 cannot rotate randomly;
the outer side of the needle sleeve 2 is provided with an extrusion mechanism 19, the outer side of the plastic sleeve 18 is provided with a plurality of gear mechanisms 6, the plurality of gear mechanisms 6 are uniformly arranged in a circular ring shape, each gear mechanism 6 comprises a groove 63 formed in the outer surface of the needle sleeve 2, a baffle 62 is arranged in the groove 63, the baffle 62 is rotatably connected in the groove 63 through a movable pin 61, the extrusion mechanism 19 comprises a positioning ring 191 sleeved on the outer side of the needle sleeve 2, the inner wall of the positioning ring 191 is provided with a thread 193, the positioning ring 191 is connected to the outer surface of the needle sleeve 2 in a threaded manner, the lower surface of the positioning ring 191 is provided with an annular groove 192, a positioning ring 195 is arranged in the annular groove 192, the outer surface of the positioning ring 195 is fixedly connected with a plurality of clamping balls 194, the inner wall of the annular groove 192 is provided with a rotating groove corresponding to the clamping balls 194, the lower surface of the positioning ring 195 is fixedly connected with a plurality of extrusion blocks 196, and by arranging the positioning ring 191 and the baffle 62, the blocking piece 62 can be taken out of the groove 63, at the moment, the blocking piece 62 is in a horizontal state, the positioning ring 195 moves downwards under the action of the threads 193, the positioning ring 195 drives the extrusion block 196 to move downwards to extrude the blocking piece, so that the inner needle 3 is stably fixed, and the clamping ball 194 can roll in the rotating groove by arranging the rotating groove and the clamping ball 194, so that the positioning ring 195 can continuously move downwards and cannot continuously rotate when extruding the blocking piece, and the friction of the extrusion block 196 on the blocking piece 62 is avoided;
the upper surface of the needle base 1 is fixedly connected with a drug injection mechanism 4, the drug injection mechanism 4 comprises a drug cartridge 42 fixedly connected with the upper surface of the needle base 1, a partition plate 410 is fixedly connected in the drug cartridge 42, a first piston 45 and a second piston 49 are arranged in the drug cartridge 42, the first piston 45 and the second piston 49 are respectively positioned at the left side and the right side of the partition plate 410, the upper surface of the first piston 45 is fixedly connected with a push rod 43, the top end of the push rod 43 penetrates through the upper surface of the drug cartridge 42 and is fixedly connected with a push block, a certain distance is reserved between the lower surface of the partition plate 410 and the lower surface of the inner wall of the drug cartridge 42, a roller 46 is arranged on the lower surface of the partition plate 410, a metal wire 48 is wound outside the roller 46, one end of the metal wire 48 is fixedly connected with the lower surface of the first piston 45, the other end of the metal wire 48 is fixedly connected with the lower surface of the second piston 49, and the second piston 49 is attached to the upper surface of a retainer ring 47, the retainer 47 is fixedly connected in the medicine cylinder 42, the medicine feeding nozzle 44 is arranged on the upper surface of the medicine cylinder 42 corresponding to the position of the second piston 49, the back surface of the medicine cylinder 42 is communicated with one end of the conduit 5, the conduit 5 is positioned on the upper side of the second piston 49, the right side surface of the medicine cylinder 42 is provided with a visual window, the visual window is provided with a scale 41, by arranging the push rod 43, the first piston 45 and the second piston 49, the push rod 43 is pushed to drive the first piston 45 to move, the first piston 45 extrudes air between the first piston 45 and the second piston 49, so that the second piston 49 can be pushed to move, so that medicine on the second piston 49 can be extruded and discharged through the conduit 5, by arranging the metal wire 48, when the first piston 45 is reset, the metal wire 48 can pull the second piston 49 to reset, by arranging the retainer 47, the distance that the second piston 49 moves downwards beyond the range can be avoided, by arranging the scale 41, the injection amount of the medicine can be conveniently controlled according to the scale 41, and by arranging the roller 46, the roller 46 can enable the metal wire 48 to stably move to avoid being broken due to friction with the partition plate 410;
the back of the medicine injection mechanism 4 is communicated with a conduit 5, the other end of the conduit 5 is communicated with a flow guide mechanism 15, the flow guide mechanism 15 is arranged at the top end of the inner needle 3, the front and the back of the inner needle 3 are fixedly connected with a slide bar 17, the slide bar 17 is slidably connected in a sliding groove formed in the inner wall of a plastic sleeve 18, the inner needle 3 moves up and down more stably under the action of the slide bar 17 and the sliding groove, and the rotation of the inner needle is avoided, the flow guide mechanism 15 comprises a flow guide ring 151 communicated with the other end of the conduit 5, the flow guide ring 151 is hollow, the lower surface of the flow guide pipe is communicated with a plurality of medicine injection needles 152, a silica gel ring 153 is sleeved outside the medicine injection needles 152, the upper surface of the inner needle 3 is provided with a medicine guide channel 16 corresponding to the position of the medicine injection needle 152, the other end of the medicine guide channel 16 penetrates through the bottom end of the medicine injection needle 3, and the conduit 5 can guide the, finally, the medicine in the flow guide ring 151 can enter the medicine guide channel 16 through the medicine injection needle 152, and the friction coefficient between the medicine injection needle 152 and the medicine guide channel 16 is increased by arranging the silica gel ring 153, so that the medicine injection needle 152 is prevented from easily separating from the medicine guide channel 16;
the right side surface of the needle seat 1 is fixedly connected with a silica gel pad 7, the silica gel pad 7 is attached to the left side surface of the circular plate 10, the upper surface of the silica gel pad 7 is fixedly connected with a first pointer 8, the position of the left side surface of the circular plate 10, which corresponds to the first pointer 8, is provided with an arc scale 9, and the rotation angle of the inner needle 3 can be measured by arranging the first pointer 8 and the scale 41;
the right side surface of the needle seat 1 is fixedly connected with a rotating shaft 11 penetrating through the silica gel pad 7, the rotating shaft 11 is sleeved in a bearing clamped on the left side surface of the circular plate 10, the right side surface of the circular plate 10 is provided with a vertical mechanism 13, the vertical mechanism 13 comprises a magnetic attraction plate 131 fixedly connected to the right side surface of the circular plate 10, the magnetic attraction plate 131 is positioned on the upper side of the rotating shaft 11, the right side surface of the magnetic attraction plate 131 is provided with an arc-shaped groove, the right side surface of the circular plate 10 is fixedly connected with a U-shaped plate 132, a movable ball 137 is rotatably connected in the U-shaped plate 132, the lower surface of the movable ball 137 is fixedly connected with a dropping needle 134, the right side surface of the dropping needle 134 is fixedly connected with an arc-shaped magnetic sheet 133, the upper surface of the movable ball 137 is fixedly connected with a second pointer 136, the right side surface of the circular plate 10 is fixedly connected with an index 135 corresponding to the position of the second pointer 136, and through the dropping needle 134, the movable ball 137, the second pointer 136, the arc-shaped magnetic sheet 133 and the magnetic attraction plate 131, the movable ball 137 can rotate at will, so the falling needle 134 can vertically point downwards under the action of gravity, the circular plate 10 is enabled to keep a vertical position, under the condition that the second pointer 136 and the index 135 are aligned, the angle of the inner needle 3 can be adjusted, after the angle adjustment is finished, the falling needle 134 is rotated to enable the arc magnetic sheet 133 to be clamped in the arc groove to be adsorbed on the magnetic attraction plate 131, the influence on the puncture is avoided, and the parallel plate 12 is fixedly connected to the lower surface of the circular plate 10.
The working principle is as follows: when in use, if the device is required to be installed, a doctor inserts the plastic sleeve 18 and the inner needle 3 into the needle sleeve 2, then stirs the blocking piece 62 to enable the blocking piece to be in a horizontal state, and simultaneously stirs the extrusion mechanism 19 to move downwards to extrude the blocking piece 62, so that the blocking piece 62 is extruded and fixed, at the moment, the inner needle 3 can be fixed, the flow guide mechanism 15 is installed on the inner needle 3, then the position of the needle seat 1 is adjusted by matching with the vertical mechanism 13, so that the angle of the inner needle 3 can be effectively adjusted, then the needle seat 1 is rotated to a certain angle to adjust the position of the inner needle 3, the falling needle 134 is accommodated in the magnetic suction plate 131 after the adjustment is completed, finally, the doctor utilizes the inner needle 3 to inject medicine into a human body under the action of the parallel plate 12, the doctor adds a certain amount of medicine into the medicine box 42 through the medicine adding nozzle 44, then pushes the push rod 43 to move downwards, and operates the medicine injection mechanism 4 to inject the medicine into the flow guide mechanism 15 through the guide tube 5, the medicine in the flow guide mechanism 15 enters the inner needle 3 through the medicine guide channel 16, and is finally injected into the human body through the inner needle 3.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. An endoscope puncture needle with a quantitative drug feeding function comprises a needle seat (1), a needle sleeve (2) and an inner needle (3), and is characterized in that the needle sleeve (2) is clamped in the needle seat (1), the inner needle (3) is arranged in the needle sleeve (2), a plastic sleeve (18) is fixedly connected to the outer side of the inner needle (3), the plastic sleeve (18) is arranged in the needle sleeve (2), the plastic sleeve (18) is detachably connected with the needle sleeve (2) through a clamping mechanism (14), an extrusion mechanism (19) is arranged on the outer side of the needle sleeve (2), a plurality of gear mechanisms (6) are arranged on the outer side of the plastic sleeve (18), the gear mechanisms (6) are uniformly arranged in a circular ring shape, a drug injection mechanism (4) is fixedly connected to the upper surface of the needle seat (1), a catheter (5) is communicated with the back of the drug injection mechanism (4), and a flow guide mechanism (15) is communicated with the other end of the catheter (5), the flow guide mechanism (15) is arranged at the top end of the inner needle (3), the right side surface of the needle seat (1) is fixedly connected with a silica gel pad (7), the silica gel pad (7) is attached to the left side surface of the circular plate (10), the right side surface of the needle seat (1) is fixedly connected with a rotating shaft (11) penetrating through the silica gel pad (7), the rotating shaft (11) is sleeved in a bearing clamped on the left side surface of the circular plate (10), the right side surface of the circular plate (10) is provided with a vertical mechanism (13), and the lower surface of the circular plate (10) is fixedly connected with a parallel plate (12); the medicine injection mechanism (4) comprises a medicine cylinder (42) fixedly connected to the upper surface of the needle base (1), a partition plate (410) is fixedly connected in the medicine cylinder (42), a first piston (45) and a second piston (49) are arranged in the medicine cylinder (42), the first piston (45) and the second piston (49) are respectively located on the left side and the right side of the partition plate (410), a push rod (43) is fixedly connected to the upper surface of the first piston (45), and the top end of the push rod (43) penetrates through the upper surface of the medicine cylinder (42) and is fixedly connected with a push block; the lower surface of the partition plate (410) and the lower surface of the inner wall of the medicine cylinder (42) have a certain distance, the lower surface of the partition plate (410) is provided with a roller (46), the outer side of the roller (46) is wound by a metal wire (48), one end of the metal wire (48) is fixedly connected with the lower surface of a first piston (45), the other end of the metal wire (48) is fixedly connected with the lower surface of a second piston (49), the second piston (49) is attached to the upper surface of a retainer ring (47), the retainer ring (47) is fixedly connected in the medicine cylinder (42), the upper surface of the medicine cylinder (42) is provided with a medicine adding nozzle (44) corresponding to the position of the second piston (49), the back surface of the medicine cylinder (42) is communicated with one end of a guide pipe (5), the guide pipe (5) is positioned on the upper side of the second piston (49), the right side surface of the medicine cylinder (42) is provided with a visual window, and scales (41) are arranged on the visual window; the clamping mechanism (14) comprises a fixing ring (141) fixedly connected to the outer side of the plastic sleeve (18), the lower surface of the fixing ring (141) is fixedly connected with a plurality of clamping plates (142), the clamping plates (142) are fixedly connected to the outer surface of the plastic sleeve (18), the clamping plates (142) are arranged in clamping grooves, the clamping grooves are formed in one side surface of a fixing plate (143), and the fixing plate (143) is fixedly connected to the inner wall of the needle sleeve (2);
perpendicular mechanism (13) are including magnetic attraction board (131) of fixed connection at plectane (10) right flank, and magnetic attraction board (131) are located the upside of pivot (11), and the arc wall has been seted up to the right flank of magnetic attraction board (131), the right flank fixedly connected with U-shaped board (132) of plectane (10), U-shaped board (132) internal rotation are connected with movable ball (137), and the lower surface fixedly connected with of movable ball (137) hangs down needle (134), and the right flank fixedly connected with arc magnetic sheet (133) of needle (134) that hangs down, the last surface fixedly connected with second pointer (136) of movable ball (137), the right flank of plectane (10) correspond the position fixedly connected with index (135) of second pointer (136).
2. An endoscope puncture needle with a quantitative drug delivery function according to claim 1, characterized in that a first pointer (8) is fixedly connected to the upper surface of the silica gel pad (7), and an arc scale (9) is arranged at the position of the left side surface of the circular plate (10) corresponding to the first pointer (8).
3. An endoscope puncture needle with quantitative drug delivery function according to claim 1, characterized in that the flow guide mechanism (15) comprises a flow guide ring (151) communicated with the other end of the conduit (5), the flow guide ring (151) is hollow, the lower surface of the flow guide ring is communicated with a plurality of drug injection needles (152), a silica gel ring (153) is sleeved outside the drug injection needles (152), the upper surface of the inner needle (3) is provided with a drug delivery channel (16) corresponding to the position of the drug injection needles (152), and the other end of the drug delivery channel (16) penetrates through the bottom end of the inner needle (3).
4. An endoscopic puncture needle with quantitative drug administration function according to claim 1, characterized in that the front and back of the inner needle (3) are both fixedly connected with a slide bar (17), and the slide bar (17) is slidably connected in a slide groove arranged on the inner wall of the plastic sleeve (18).
5. An endoscopic puncture needle with quantitative drug administration function according to claim 1, wherein the gear mechanism (6) comprises a groove (63) formed on the outer surface of the needle sheath (2), a blocking piece (62) is arranged in the groove (63), and the blocking piece (62) is rotatably connected in the groove (63) through a movable pin (61).
6. The endoscope puncture needle with the quantitative medicine feeding function according to claim 1, wherein the extrusion mechanism (19) comprises a positioning ring (191) sleeved outside the needle sleeve (2), the inner wall of the positioning ring (191) is provided with a thread (193), the positioning ring (191) is connected to the outer surface of the needle sleeve (2) in a threaded manner (193), the lower surface of the positioning ring (191) is provided with an annular groove (192), a positioning ring (195) is arranged in the annular groove (192), the outer surface of the positioning ring (195) is fixedly connected with a plurality of clamping balls (194), a rotating groove is formed in the position, corresponding to the clamping balls (194), of the inner wall of the annular groove (192), and a plurality of extrusion blocks (196) are fixedly connected to the lower surface of the positioning ring (195).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| JP2007000463A (en) * | 2005-06-24 | 2007-01-11 | Terumo Corp | Catheter assembly |
| CN201939464U (en) * | 2011-01-19 | 2011-08-24 | 杨光全 | Pericardial puncture needle |
| JP2018171231A (en) * | 2017-03-31 | 2018-11-08 | テルモ株式会社 | Medical needle and assembly of medical needle |
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| CN112401986A (en) | 2021-02-26 |
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