CN204951090U

CN204951090U - Lumbar puncture needle

Info

Publication number: CN204951090U
Application number: CN201520553217.5U
Authority: CN
Inventors: 江力; 王昊; 俞文华
Original assignee: Hangzhou First Peoples Hospital
Current assignee: Hangzhou First Peoples Hospital
Priority date: 2015-07-28
Filing date: 2015-07-28
Publication date: 2016-01-13
Anticipated expiration: 2025-07-28

Abstract

The utility model relates to the field of medical equipment, lumbar puncture needle especially. A lumbar puncture needle, includes main needle tubing, still include the suit on main needle tubing, and can dismantle and be used for fixing the fixing device in the needle tubing optional position. Adopted the utility model discloses a lumbar puncture needle can not only prevent effectively that the pjncture needle from probably causing the mistake damage, gos back the above -mentioned preferred scheme of accessible and realizes that the inserting needle degree of depth is controllable, the cerebrospinal fluid velocity of flow is adjustable, make things convenient for beneficial effect such as pressure measurement and injection.

Description

A kind of lumbar puncture needle

Technical field

This utility model relates to medical instruments field, particularly a kind of lumbar puncture needle.

Background technology

Lumbar puncture art is one of clinical conventional inspection method, for measuring cerebrospinal pressure, gathering brain ridge specimen, carrying out in the lumbar vertebra paracentesis such as cerebrospinal fluid displacement, it has important value to the Diagnosis and Treat of nervous system disease, but it is as improper in indication grasp, the lighter can increase the weight of original state of an illness, and severe one even jeopardizes patient's safety.The lumbar puncture needle of current clinical employing is by usually making the lumbar puncture needle of its needle handle and needle guard intracavity inter-connection by the needle guard with needle handle and being formed with its nook closing member with needle handle can inserted in its inner chamber.Because this kind of lumbar puncture needle structure too simplifies, operation process is entirely with doctors experience, and cannot fix after inserting needle or continue to keep puncture needle position firm, and prevent the appearance of everything problem from only controlling with the maneuver of surgical, therefore there is certain iatrogenic injury hidden danger, as patient's needle tubing that particularly reason such as child motor, doctor's bungle causes is shifted in piercing process, cause the malpracticees such as canalis spinalis tissue damaged.

Summary of the invention

Based on the problems referred to above, it is controlled and can the lumbar puncture needle of firm needle body position that the purpose of this utility model there are provided a kind of depth of needle.

In order to realize foregoing invention object, this utility model have employed following technical scheme:

A kind of lumbar puncture needle, comprises main needle tubing, also comprises and being sleeved on main needle tubing and the detachable fixture being fixed on needle tubing optional position.

As preferably, described fixture is made up of sleeve pipe, spanner and clip; It is outside that described sleeve pipe is slidably set in described main needle tubing; Described spanner is hinged on the tube wall of sleeve pipe, and the inner of described spanner is in inside pipe casing; Be provided with one by compression leg at the inner sidepiece of spanner, the inner of described clip is fixedly connected with by compression leg, and when spanner presses down, clip is fixedly stuck on described main needle tubing.

As preferably, described fixture is made up of sleeve pipe and lock-screw; Lock-screw outer end is provided with knob, and the inner is provided with soft pad; Described cover tube side part is provided with screw, and lock-screw is threaded in screw.

As preferably, described main needle tubing outer wall is provided with scale.

As preferably, also comprise the needle handle with inner chamber and pin stamen, through inside described main needle tubing, main syringe rear end is fixedly connected with needle handle and inner chamber is interconnected; Described pin stamen is placed in needle handle inner chamber and is connected with needle handle internal chamber wall.

As preferably, described pin stamen is made up of the nook closing member head be fixedly connected with and needle core handle; Described nook closing member head stretches into inside described needle handle; Needle core handle is positioned at the port of needle handle, and matches with the port inner wall of needle handle.

Have employed this uses novel lumbar puncture needle can not only effectively prevent puncture needle from may cause by mistake damage, also realizes that depth of needle is controlled by above-mentioned preferred version, cerebrospinal fluid flow velocity adjustable, facilitates the beneficial effect such as pressure measurement and injection.

Accompanying drawing explanation

Fig. 1: be using state schematic diagram of the present utility model;

Fig. 2: be A portion structure for amplifying schematic diagram in this utility model Fig. 1.

Fig. 3: be the structure for amplifying schematic diagram of fixture in this utility model embodiment 2.

Fig. 4: be using state schematic diagram two of the present utility model;

Detailed description of the invention

Below in conjunction with accompanying drawing, this utility model is described further.

Embodiment 1: lumbar puncture needle as shown in Figure 1, Figure 2 and Figure 4 comprises, the main needle tubing 11 with inner chamber, the needle handle 12 with inner chamber and pin stamen.

Through inside main needle tubing 11, main needle tubing 11 rear end is fixedly connected with needle handle 12 and inner chamber is interconnected, and main needle tubing 11 outer wall is provided with scale 110, and the spacing of every bar graduation mark 110 is 0.1 centimetre, controlled depth of needle accordingly.Pin stamen is placed in needle handle 12 inner chamber and is connected with needle handle 12 internal chamber wall.Pin stamen is made up of the nook closing member head 21 be fixedly connected with and needle core handle 22.Nook closing member head 21 stretches into inside described needle handle 12.Needle core handle 22 is positioned at the port of needle handle 12, and matches with the port inner wall of needle handle 12, and nook closing member head 21 can coordinate slip in main needle tubing 11.Show that nook closing member head 21 has inserted main needle tubing 12 completely in the port that needle core handle 22 is stuck in needle handle 12.

Above-mentioned fixture 30, be made up of sleeve pipe 31, spanner 32 and clip 33, sleeve pipe 31 is slidably set in outside needle guard head 11, spanner 32 is hinged on the tube wall of sleeve pipe 31, the inner of spanner 32 is in sleeve pipe 31 inside, be provided with one by compression leg 320 at the inner sidepiece of spanner, the inner of clip 33 is fixedly connected with by compression leg 320.It should be noted that this length by compression leg 320 should ensure, when downward pressing spanner, clip 33 can be made to touch and prop up main needle tubing 11.

During use, after determining depth of needle, fixture 30 is moved on concrete scale, press lower ejector lever 32 outer end, the clip 33 being contacts and is pressed on main needle tubing 11, thus allow fixture 30 in operation process as limited block, specify depth of needle, and prevent inserting needle from excessively causing tissue injury.

In order to detect cerebrospinal pressure, and according to showing the difference of pressure, the convenient rate of outflow controlling cerebrospinal fluid, needle handle 12 is also provided with one for connecting the pressure measurement mouth of pipe 120 of pressure measurement flexible pipe, the inner space of the pressure measurement mouth of pipe 120 and needle handle 12.

Conveniently liquid medicine injection in puncturing operation process, as shown in Figure 4, needle handle 12 is provided with an injection mouth of pipe 121, this injection mouth of pipe 121 to be positioned on front side of the described pressure measurement mouth of pipe 120 and with the inner space of needle handle 12.Medicine can inject directly to the injection mouth of pipe 121, convenient and safe and be not easy to be blocked by cerebrospinal fluid.Further, be provided with a rubber cap 122 on the injection mouth of pipe 121 top, rubber cap 122 and the injection mouth of pipe 121 removably connect.The sterilization that rubber cap 122 can effectively avoid complex appts to cause such as sternly not to infect at the situation, and it can stop cerebrospinal fluid to flow out from the injection mouth of pipe, simple and practical.

Conveniently use, be also provided with rotatable three-way valve 123 in the inside of needle handle 12, a mouth of three-way valve 123 is equal with the overall diameter length of nook closing member head 21 with the interior diameter of b mouth.The inner chamber of this three-way valve 123 can be communicated with the inner chamber of needle handle 12, the pressure measurement mouth of pipe 120 at the same time or separately.When three-way valve 123 rotates the state be not connected to needle guard inner chamber and the pressure measurement mouth of pipe 120, nook closing member inserts in needle guard, can start to carry out puncturing operation; When the b mouth of three-way valve 123 is threaded to the pressure measurement mouth of pipe 120 connected state, pressure measurement flexible pipe can be used to carry out pressure measurement to the cerebrospinal fluid flowed out, also can adjust cerebrospinal fluid flow velocity according to pressure measurement result swivel tee valve 123; When a mouth of three-way valve 123 is threaded to the pressure measurement mouth of pipe 120 connected state, and the pressure measurement mouth of pipe 120, needle handle 12 external port all not with needle guard inner space time, above-mentioned rubber cap 122 can be taken off, from the injection mouth of pipe 121 inwardly injectable drug.

Routinely during operation use lumbar puncture needle of the present utility model, carry out according to the following steps: 1 prepares lumbar puncture: when three-way valve 123 being rotated the state be not connected to needle guard inner chamber and the pressure measurement mouth of pipe 120, nook closing member inserts in needle guard completely, carries out puncturing operation in patient body precalculated position; 2 pressure measurement: puncture successfully, when being threaded to the b mouth of three-way valve 123 with the pressure measurement mouth of pipe 120 connected state, can using pressure measurement flexible pipe to carry out pressure measurement to the cerebrospinal fluid flowed out, also can adjust cerebrospinal fluid flow velocity according to pressure measurement result swivel tee valve 123; 3 specimen takens: after pressure measurement, rotate the state to above-mentioned steps 1 by three-way valve 123, and sample flows out from the external port of needle handle 12 automatically; 4 injections: a mouth of three-way valve 123 is threaded to and the pressure measurement mouth of pipe 120 connected state, and the pressure measurement mouth of pipe 120, needle handle 12 external port all not with needle guard inner space time, above-mentioned rubber cap 122 can be taken off, from the injection mouth of pipe 121 inwardly injectable drug.As without the need to injection, now can extract lumbar puncture needle and terminate operation.

It should be noted that, three-way valve 123 also can be rotated the state to above-mentioned steps 1 by injection step, injection is carried out from the external port of needle handle 12, use also very convenient, just the injection mouth of pipe 121 is equipped with the setting of rubber cap 122, the sterilization that can effectively avoid complex appts to cause such as sternly not to infect at the situation, and does not make injections difficult because cerebrospinal fluid blocking needle guard inner chamber.

Embodiment 2: the present embodiment is only the different of fixture 30 from the difference of embodiment 1, being made up of fixture 30 sleeve pipe 31 and lock-screw 34 of the present embodiment.Lock-screw 34 outer end is provided with knob, and the inner is provided with soft pad 35.Sleeve pipe 31 sidepiece is provided with screw, and lock-screw 34 is threaded in screw, and when tightening knob, the inner of lock-screw 34 is pressed on main needle tubing 11 by soft pad 35, thus realizes fixing.

The foregoing is only preferred embodiment of the present utility model; not in order to limit this utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.

Claims

1. a lumbar puncture needle, comprises main needle tubing (11), it is characterized in that: also comprise and being sleeved on main needle tubing (11) and the detachable fixture (30) being fixed on needle tubing optional position.

2. a kind of lumbar puncture needle as claimed in claim 1, is characterized in that: described fixture (30) is made up of sleeve pipe (31), spanner (32) and clip (33); Described sleeve pipe (31) is slidably set in described main needle tubing (11) outside; Described spanner (32) is hinged on the tube wall of sleeve pipe (31), and the inner of described spanner (32) is in sleeve pipe (31) inside; One is provided with by compression leg (320) at the inner sidepiece of spanner (32), the inner of described clip (33) is fixedly connected with by compression leg (320), when spanner (32) presses down, clip (33) is fixedly stuck on described main needle tubing (11).

3. a kind of lumbar puncture needle as claimed in claim 1, is characterized in that: described fixture (30) is made up of sleeve pipe (31) and lock-screw (34); Lock-screw (34) outer end is provided with knob, and the inner is provided with soft pad (35); Described sleeve pipe (31) sidepiece is provided with screw, and lock-screw (34) is threaded in screw.

4. a kind of lumbar puncture needle as described in claim 1-3 any one, is characterized in that: described main needle tubing (11) outer wall is provided with scale (110).

5. a kind of lumbar puncture needle as claimed in claim 1, it is characterized in that: also comprise the needle handle (12) with inner chamber and pin stamen, described main needle tubing (11) inner side is through, and main needle tubing (11) rear end is fixedly connected with needle handle (12) and inner chamber is interconnected; Described pin stamen is placed in needle handle (12) inner chamber and is connected with needle handle (12) internal chamber wall.

6. a kind of lumbar puncture needle as claimed in claim 5, is characterized in that: described pin stamen is made up of the nook closing member head (21) be fixedly connected with and needle core handle (22); Described nook closing member head (21) stretches into described needle handle (12) inner side; Needle core handle (22) is positioned at the port of needle handle (12), and matches with the port inner wall of needle handle (12).