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CN-122005025-A - Multifunctional controllable drip-proof waist puncture needle sleeve group for intrathecal injection

CN122005025ACN 122005025 ACN122005025 ACN 122005025ACN-122005025-A

Abstract

The invention relates to the technical field of medical auxiliary instruments, in particular to a multifunctional controllable drip-proof waist puncture needle sleeve group for intrathecal injection, which comprises a plastic transparent three-way pipe, wherein a closed overflow mechanism is arranged at the side opening end of the plastic transparent three-way pipe, a closed flow speed adjusting valve is arranged in the middle of an external multifunctional short pipe, the liquid inlet end of the plastic transparent three-way pipe is in threaded connection with the external thread at one end of a waist puncture needle outer sleeve through internal threads, a liquid leakage preventing mechanism is arranged in the liquid outlet end of the plastic transparent three-way pipe, a return spring can be stretched and contracted by stretching and contracting the return spring in a protective shell, so that the return spring can be stretched and contracted to be used for carrying out insertion and adjustment in an adjusting slot, the anti-overflow disc and a triangle are closed, and when cerebrospinal fluid is discharged, the anti-overflow disc is propped into the annular slot along with the pressure of the cerebrospinal fluid, and a gap is reserved between the annular slot and the anti-overflow disc, so that cerebrospinal fluid is conveniently discharged.

Inventors

  • Zhao Qianlei
  • LI SISI
  • XI JIANAN
  • BU YIMING
  • CEN XINYU
  • LIU GUANHAO
  • DING QIANG

Assignees

  • 温州医科大学附属第二医院（温州医科大学附属育英儿童医院）

Dates

Publication Date
20260512
Application Date
20260331

Claims (8)

  1. 1. The utility model provides a can be used to multi-functional controllable drip-proof waist needle cover group of intrathecal injection, includes transparent three-way pipe (1) of plastics, its characterized in that, the side mouth end of transparent three-way pipe (1) of plastics is provided with closed overflow mechanism (2), one side of closed overflow mechanism (2) is provided with external multi-functional nozzle stub (3), the middle part of external multi-functional nozzle stub (3) is provided with closed velocity of flow governing valve (4), the income liquid end of transparent three-way pipe (1) of plastics passes through the external screw thread threaded connection of internal screw thread and waist needle outer tube (5) one end, the inside leak protection liquid mechanism (6) that is provided with of the liquid end of transparent three-way pipe (1), the inside interlude of waist needle outer tube (5) is provided with rigidity needle core (7).
  2. 2. The multifunctional controllable drip-proof waist puncture needle sleeve group capable of being used for intrathecal injection according to claim 1, wherein the closed overflow mechanism (2) comprises an overflow-proof seat (201) connected with a side port of the top of a plastic transparent three-way pipe (1) in a clamping mode, a bottom thread seat (202) is installed at the top of the overflow-proof seat (201), a protection screen frame (203) is installed in the middle of the bottom thread seat (202), an overflow-proof shell (204) is connected with the top thread of the bottom thread seat (202), a triangular fixing frame (205) is fixedly connected with the inner side of a mouth edge of the top of the overflow-proof shell (204), an adjusting slot (206) is formed in the middle of the triangular fixing frame (205), a protection shell (207) is fixedly connected with the bottom end of the adjusting slot (206), a reset spring (208) is fixedly connected with the bottom end of the inside the protection shell (207), a guide rod (209) is fixedly connected with the top of the reset spring (208), the rod outer side of the guide rod (209) is inserted into the adjusting slot (206), and the overflow-proof disc (209) is fixedly connected with the top of the guide rod (2010).
  3. 3. The multifunctional controllable drip-proof waist puncture needle sleeve group for intrathecal injection according to claim 2, wherein the outer side of the top of the protective shell (207) is in threaded connection with the inner thread of the inlet end of the external multifunctional short tube (3) through an outer thread, a flow rate control valve (2011) is installed on one side of the external multifunctional short tube (3), an annular slot (2012) is formed in the protective shell (207), and the diameter of the annular slot (2012) is larger than that of the overflow-proof disc (2010).
  4. 4. The multifunctional controllable drip-proof waist puncture needle sleeve group for intrathecal injection according to claim 1, wherein the liquid leakage prevention mechanism (6) comprises a plurality of groups of fixing springs (601) fixedly connected with the inner side of a liquid outlet end of a plastic transparent three-way pipe (1), one side of each fixing spring (601) is fixedly connected with a closing block (602), the plurality of closing blocks (602) are combined into a cylinder, the upper edge of the cylinder is attached to a liquid outlet of the plastic transparent three-way pipe (1) in a sealing mode, a concave groove (603) is formed in the middle of the top end of the cylinder, and round plastic sleeves are formed between the closing blocks (602).
  5. 5. The multifunctional controllable drip-proof waist puncture needle sleeve group for intrathecal injection according to claim 1, wherein the inner edge of the outlet end of the plastic transparent three-way pipe (1) is fixedly connected with a clamping block (101), and a plurality of clamping grooves (102) are formed in the outer side of one end of the rigid needle core (7).
  6. 6. The multifunctional controllable drip-proof waist puncture needle sleeve group for intrathecal injection according to claim 1, wherein the outer side of the waist puncture needle outer sleeve (5) is provided with scales.
  7. 7. The multifunctional controllable drip-proof waist puncture needle sleeve group for intrathecal injection according to claim 1, wherein two diversion trenches (8) are formed on the surface of the rigid needle core (7).
  8. 8. The multifunctional controllable drip-proof waist puncture needle sleeve group for intrathecal injection according to claim 1, wherein the plastic transparent three-way pipe (1) is made of plastic transparent materials.

Description

Multifunctional controllable drip-proof waist puncture needle sleeve group for intrathecal injection Technical Field The invention relates to the technical field of medical auxiliary instruments, in particular to a multifunctional controllable drip-proof waist puncture needle sleeve group for intrathecal injection. Background Lumbar puncture needle is a medical apparatus for lumbar puncture, generally composed of a needle tube, a needle core and a needle seat, and is used for obtaining cerebrospinal fluid or performing intrathecal injection treatment by puncturing into subarachnoid space. The waist puncture needle with the leakage prevention function disclosed in the application number of CN111437015A is an increasingly mature technology, and comprises a needle tube and a needle core, wherein the needle tail part of the needle tube is provided with a notch connected with a pressure measuring tube or a collecting tube, a T-shaped pore canal is arranged in the needle tail part and is provided with a main pore canal for the needle core to pass through and a branch pore canal communicated with the notch, the T-shaped pore canal is divided into a main pore canal front side part, a main pore canal tail side part and a branch pore canal by taking the junction of the main pore canal and the branch pore canal as a boundary, the aperture of the main pore canal tail side part is larger than the outer diameter of the needle core, a one-way valve assembly groove is formed in the main pore canal tail side part, a silica gel one-way valve is fixedly arranged in the one-way valve assembly groove, and a switch-type one-way valve is arranged in the branch pore canal. The invention can conveniently seal the opening at the tail of the needle tube in the operation process of the puncture operation and can effectively control the loss of cerebrospinal fluid in the process of the lumbar puncture operation. However, the design of the lumbar puncture needle has the following defects that when the inner core of the lumbar puncture needle is pulled out to observe whether the lumbar puncture needle enters the subarachnoid space or not, or the inner core of the lumbar puncture needle is pulled out to perform intrathecal injection (such as spinal muscular atrophy, spinal muscular atrophy and intrathecal injection treatment), cerebrospinal fluid drip easily occurs, and medical staff is polluted to cause infection risk. Accordingly, there is a need to provide a lumbar puncture needle capable of preventing leakage of cerebrospinal fluid to solve the above-mentioned problems. Disclosure of Invention Aiming at the defects of the prior art, the invention provides a multifunctional controllable drip-proof waist puncture needle sleeve group for intrathecal injection, which solves the problems in the background art. In order to achieve the purpose, the multifunctional controllable drip-proof waist puncture needle sleeve group for intrathecal injection comprises a plastic transparent three-way pipe, wherein a closed overflow mechanism is arranged at the side opening end of the plastic transparent three-way pipe, an external multifunctional short pipe is arranged at one side of the closed overflow mechanism, a closed flow speed adjusting valve is arranged in the middle of the external multifunctional short pipe, a liquid inlet end of the plastic transparent three-way pipe is in threaded connection with an external thread at one end of a waist puncture needle outer sleeve through an internal thread, a liquid leakage prevention mechanism is arranged in a liquid outlet end of the plastic transparent three-way pipe, and a rigid needle core is inserted in the waist puncture needle outer sleeve. Preferably, the closed overflow mechanism comprises an anti-overflow seat connected with a side port of the top of a plastic transparent three-way pipe in a clamping manner, a bottom thread seat is arranged at the top of the anti-overflow seat, a protective net frame is arranged in the middle of the bottom thread seat, an anti-overflow shell is connected with the top thread of the bottom thread seat, a triangular fixing frame is fixedly connected with the inner side of a mouth edge of the top of the anti-overflow shell, an adjusting slot is formed in the middle of the triangular fixing frame, a protective shell is fixedly connected with the bottom of the adjusting slot, a reset spring is fixedly connected with the bottom of the inside of the protective shell, a guide rod is fixedly connected with the top of the reset spring, the outer side of a rod column of the guide rod is arranged in a penetrating manner with the adjusting slot, and an anti-overflow disc is fixedly connected with the top of the guide rod; The top outside of protective housing passes through external screw thread and external multi-functional nozzle stub entrance point internal thread threaded connection, the velocity of flow control valve is installed to one side of external multi-functional