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Medical needle unit having wing shield for preventing erroneous puncturing

A technology to prevent accidents and a protective cover, which is applied in the direction of needles, guide needles, and instruments introduced into the body, and can solve problems such as failure to obtain fixation force and loosening of fixation force

Inactive Publication Date: 2007-05-16
JMS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, existing injection needle devices having a guard with wings do not provide a secure fixation of the needle relative to the guard during the piercing operation.
That is, the mechanism has the possibility of causing the fixing force to loosen
[0010] In addition, during the insertion operation and after the insertion is completed (when the needle remains in the patient's body and when the needle is withdrawn from the patient's body), the fixation of the injection needle is achieved by a common mechanism, neither during nor after the insertion. get the right fixation

Method used

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  • Medical needle unit having wing shield for preventing erroneous puncturing
  • Medical needle unit having wing shield for preventing erroneous puncturing
  • Medical needle unit having wing shield for preventing erroneous puncturing

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0045] 1 is a plan view of a medical needle device according to a first embodiment of the present invention. Reference numeral 1 denotes a needle mounted on the front end of a needle base 2 made of resin. A tube 3 is connected to the rear end of the needle base 2 . Reference numeral 4 denotes a winged shield comprising a substantially cylindrical shield barrel 4a made of resin and left and right wings 5, 6. The needle 1 and the needle base 2 are axially movably inserted into the lumen of the shield barrel 4a. The left and right wings 5 ​​and 6 are located at the front end of the shield barrel 4a, that is, the side where the needle 1 protrudes. The left and right side wings 5, 6 are respectively connected on both sides of the outer surface of the protective cover cylinder 4a. The left and right side wings 5, 6 are symmetrical with respect to the central axis of the shield cylinder 4a. A needle cap 18 is installed on the front end of the needle base 2 to cover the needle 1 ....

no. 2 example

[0075] Figure 6 shows a winged shield constituting a medical needle device according to a second embodiment of the present invention. In addition to the structure of the first embodiment, the shield with side wings also includes a fixing member 20 located on the upper surface of the shield barrel 4a. As described above, after the medical needle device is used, the needle base is fixed in the protective cover barrel 4a by pulling the tube connected with the needle base to the rear end of the protective cover barrel 4a, thereby preventing accidental puncturing of the needle. enter. The fixing member 20 is used to fix the shield cylinder 4a so as not to move at this time. That is, the operation of pulling the needle base toward the rear end of the shield barrel 4a is made easier by grasping the retainer 20 with the fingers against the force of pulling the needle tube.

no. 3 example

[0077] FIG. 7 shows a winged shield constituting a medical needle device according to a third embodiment of the present invention. In addition to the structure of the first embodiment, the protective cover with side wings also includes an auxiliary fixing mechanism with a pivot member 21 located at the end of the barrel 4a of the protective cover. FIG. 7A is a plan view thereof, and FIG. 7B is a cross-sectional view along the line D-D in FIG. 7A . One side of the pivoting member 21 is fixed on the shield cylinder 4a in the longitudinal direction, and the other side can be pivoted around the axis of the shield cylinder 4a, and has a protrusion 22 . A through hole 23 is formed in the fixed portion of the pivot member 21 . A through hole communicating with the through hole 23 is formed on the cylinder wall of the shield cylinder 4a.

[0078] FIG. 8 shows the needle base 2 used in combination with the winged shield shown in FIG. 7 . The rear of the needle base 2 has an auxiliar...

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PUM

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Abstract

A medical needle unit comprising a wing shield having a shield tube and wing parts bonded to the forward end side thereof, and a needle base and a needle tube inserted into the shield tube. The wing parts have wing protrusions and the shield tube has through holes made in the tube has through pholes made into the tubular wall thereof. When both wing parts are placed in layer along the side face of the shield tube, each wing protrusion can be inserted into an inner cavity of the shield tube through the through hole. At the time of puncturing operation, axial movement of the needle base is blocked by each wing protrusion without requiring any special operation and the needle base can be held surely in the shield tube which projecting the needle tube by a specified length from the forward end of the shield tube.

Description

technical field [0001] The present invention relates to a medical needle device with side wings. In particular, it relates to a medical needle device with a side-winged shield to prevent accidental puncture wounds in which the needle can be safely stored after use. Background technique [0002] There is a problem of contamination or infection caused by accidental puncture of injection needles, puncture needles, etc. in existing medical equipment. Especially recently, such accidental puncture may cause infection of hepatitis B, hepatitis C, AIDS, or the like, and therefore, development of equipment for effectively preventing accidents such as accidental puncture has attracted widespread attention. [0003] At present, many injection needle devices have been proposed for preventing accidental puncture wounds, and the needle is covered when the injection needle or puncture needle is stored after use. Most devices for preventing accidental needle sticks have a cylindrical prot...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M5/158A61M5/32A61M25/06
CPCA61M5/158A61M25/0631A61M25/0637A61M5/3243A61M25/0612
Inventor 国富纯土井隆司
Owner JMS CO LTD