CN216876518U

CN216876518U - Intrathecal injection device for lumbar puncture

Info

Publication number: CN216876518U
Application number: CN202121118288.4U
Authority: CN
Inventors: 王冠杰; 刘云峰; 任婧婧; 刘志勤
Original assignee: Xi'an central hospital
Current assignee: Xi'an central hospital
Priority date: 2021-05-24
Filing date: 2021-05-24
Publication date: 2022-07-05
Anticipated expiration: 2031-05-24

Abstract

The utility model provides a lumbar puncture intrathecal injection device, which comprises an injector and a test tube; the injection head of the injector is respectively communicated with a pressure measuring interface and a liquid suction interface, and the pressure measuring interface and the liquid suction interface are respectively provided with a first one-way valve and a second one-way valve; the lower end of an injection tube of the injector is communicated with a liquid collecting interface, and a third one-way valve is arranged on the liquid collecting interface; the liquid collecting interface is detachably connected with the test tube; and one end of the piston head of the injector, which is close to the injection head, is provided with an injection liquid mixing component. According to the utility model, three operations of pressure measurement, cerebrospinal fluid collection and liquid medicine injection can be realized only by connecting the injection head with the needle tube of the puncture needle, repeated withdrawal and retraction of the needle core are not needed, repeated operation is reduced, and the burden of medical care personnel is lightened; the opening of the operation gap is not exposed, so that the occurrence of infection is reduced, and the safety is improved; has the function of uniformly mixing the liquid medicine, is easier to be accepted by human bodies and has better effect; the test tube does not need to be held by hands, the integrity performance is good, and the patient feels more comfortable.

Description

Intrathecal injection device for lumbar puncture

Technical Field

The utility model relates to the technical field of medical auxiliary instruments, in particular to a lumbar puncture intrathecal injection device.

Background

The lumbar puncture is the most commonly used diagnosis and treatment mode in neurosurgery, has high clinical practical value, has important significance for diagnosing nervous system diseases, and is widely applied to the auxiliary diagnosis of the neurologic diseases, such as meningitis, encephalitis, hemorrhagic cerebrovascular diseases, brain tumors, myelopathy and other nervous system diseases which can not be diagnosed and treated through routine examination. In addition, the cerebrospinal pressure and the cerebrospinal dynamics examination can be carried out through lumbar puncture, and contrast agents and medicines can be injected.

At present, the following problems exist in the process of lumbar puncture and intrathecal injection clinically:

(1) in the whole process, a piezometer tube is generally required to be connected for measuring the pressure twice, the stylet is required to be withdrawn and retracted repeatedly, the action is repeated and complicated, and the working efficiency of medical staff is reduced;

(2) when collecting cerebrospinal fluid, the medical staff needs to hang the test tube in the air and place the test tube below the tail of the puncture needle to collect the cerebrospinal fluid, so that the workload of the medical staff is increased, and the cerebrospinal fluid is easy to leak;

(3) the administration operation can be carried out only after the cerebrospinal fluid is completely extracted, and the opening of the puncture needle is exposed, so that the infection is easily caused and the safety is low;

(4) when the injection is performed in the sheath, the injection can be performed after the equivalent amount of cerebrospinal fluid is generally extracted and is uniformly mixed with the medicine, and if the injection is not uniformly mixed, the injection can cause some damage to the body of a patient.

In view of the foregoing, there is a need for a lumbar puncture intrathecal injection device that overcomes the above and problems.

SUMMERY OF THE UTILITY MODEL

It is an object of the present invention to provide a lumbar puncture intrathecal injection device which overcomes the above problems.

In order to achieve the purpose, the utility model adopts the technical scheme that: lumbar puncture intrathecal injection device comprising:

syringes and test tubes;

the injection head of the injector is respectively communicated with a pressure measuring interface and a liquid suction interface, and the pressure measuring interface and the liquid suction interface are respectively provided with a first one-way valve and a second one-way valve;

the lower end of an injection tube of the injector is communicated with a liquid collecting interface, and a third one-way valve is arranged on the liquid collecting interface;

the liquid collecting interface is detachably connected with the test tube;

and one end of the piston head of the injector, which is close to the injection head, is provided with an injection liquid mixing component.

The object of the present invention and the technical problems solved thereby can be further achieved by the following technical measures.

Furthermore, the injection blending part comprises a thin rod fixedly connected in the middle of the piston head and a plurality of fan blades fixed at the end part of the thin rod, and the fan blades are uniformly arranged along the axis of the thin rod respectively.

Further, the number of the fan blades is three.

Further, the total length and the total width of the fan blade and the slender rod are both smaller than the length and the inner diameter of the injection head.

Further, the outer wall of collection liquid interface is equipped with the external screw thread, the inner wall of test tube be equipped with the internal thread that the external screw thread matches.

Further, the pressure measuring port and the liquid suction port are respectively arranged at the upper end and the lower end of the injection head.

Furthermore, the outer wall of the injection cylinder is provided with scale marks.

Further, the test tube support device also comprises a support part detachably connected with the test tube.

Furthermore, the supporting component is an inflatable cone frustum, a hemispherical groove is formed in the upper end of the cone frustum, and the side wall of the cone frustum is connected with an air inflation and exhaust pump through an air inflation pipe.

Furthermore, the inner wall of the groove is provided with sponge.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the intrathecal injection device for lumbar puncture, disclosed by the utility model, the pressure measuring interface and the liquid suction interface are arranged on the injection head, the liquid collection interface is arranged at the lower end of the injection tube, and the three interfaces are respectively provided with the one-way valve, so that when the intrathecal injection device is used, three operations of measuring pressure, collecting cerebrospinal fluid and injecting liquid medicine can be realized only by connecting the injection head with the needle tube of the puncture needle without repeatedly withdrawing and retracting the needle core, the complicated and repeated operations are reduced, and the burden of medical workers is lightened; and the openings of the puncture needle are not exposed in the three operation gaps, so that the occurrence of infection is reduced, and the safety of intrathecal injection of lumbar puncture is improved.

2. According to the intrathecal injection device for lumbar puncture disclosed by the utility model, the test tube is detachably connected to the liquid collection interface, when collecting cerebrospinal fluid, the test tube needs to be installed, the piston rod is pulled backwards until the liquid collection interface is exposed, the cerebrospinal fluid can be collected by opening the third one-way valve, medical staff do not need to hang and hold the test tube in the air and place the test tube below the tail part of the puncture needle to collect the cerebrospinal fluid, the workload of the medical staff is reduced, and the cerebrospinal fluid is not easy to leak.

3. According to the intrathecal injection device for lumbar puncture disclosed by the utility model, the injection liquid mixing component is arranged at one end of the piston head close to the injection head, before medicine is sucked, cerebrospinal fluid with the same quantity as the medicine liquid is firstly extracted, then the one-way valve of the liquid suction interface is opened, the piston rod is pulled backwards, the injection liquid mixing component can play a role in stirring the mixed liquid in the process of pulling the piston rod, and finally, the mixed medicine liquid is slowly injected into the body of a patient, so that the uniformly mixed medicine liquid is more acceptable to the human body, and the effect is better.

4. According to the intrathecal injection device for lumbar puncture disclosed by the utility model, the supporting part is arranged at the lower end of the test tube, so that the test tube can be supported in the process of collecting cerebrospinal fluid, the phenomenon that the puncture needle is pulled down by the weight of the test tube is avoided, on one hand, the comfort of a patient is improved, and on the other hand, medical staff can liberate hands and reduce the burden.

Drawings

FIG. 1 is a schematic view of the overall structure of the intrathecal injection device for lumbar puncture provided by the utility model;

FIG. 2 is a schematic view showing the overall structure of a cuvette in an embodiment of the present invention;

fig. 3 is a schematic view of the overall structure of a support member provided in the embodiment of the present invention;

description of reference numerals:

1. an injector; 11. an injection head; 12. an injection tube; 13. a piston head; 14. scale marks;

2. a test tube; 21. an internal thread;

3. a pressure measuring interface; 31. a first check valve;

4. a liquid suction interface; 41. a second one-way valve;

5. a liquid collection interface; 51. a third check valve; 52. an external thread;

6. an injection mixing component; 61. a thin rod; 62. a fan blade;

7. a support member; 71. a groove; 72. an inflation tube; 73. an air charging and discharging pump; 74. a sponge.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

Example one

Referring to fig. 1 to 2, a lumbar puncture intrathecal injection device includes: a syringe 1 and a test tube 2;

the injection head 11 of the injector 1 is respectively communicated with a pressure measuring interface 3 and a liquid suction interface 4, and the pressure measuring interface 3 and the liquid suction interface 4 are respectively provided with a first one-way valve 31 and a second one-way valve 41; the injection head 11 is used for withdrawing the needle core and then is connected with the interface of the puncture needle; when pressure measurement is needed and liquid medicine needs to be sucked, the pressure measurement interface 3 and the liquid suction interface 4 are respectively used for being externally connected with a pressure measurement pipe and a liquid medicine bottle; the first one-way valve 31 and the second one-way valve 41 can prevent the liquid from flowing in two directions, and the mutual influence caused by pressure measurement and liquid medicine suction can be avoided.

The lower end of the injection tube 12 of the injector 1 is communicated with a liquid collecting interface 5 which is used for being externally connected with a liquid collecting container, a third one-way valve 51 is arranged on the liquid collecting interface 5, and the third one-way valve 51 can ensure that cerebrospinal fluid only flows towards the liquid collecting container;

the liquid collecting interface 5 is detachably connected with the test tube 2; when collecting cerebrospinal fluid, install test tube 2, pull back the piston rod, until exposing album liquid interface 5 after, open third check valve 51 and can collect cerebrospinal fluid, medical staff does not need unsettled handheld test tube 2 to place and collects cerebrospinal fluid in puncture needle tail below, not only alleviates medical staff's work burden, and cerebrospinal fluid is difficult for leaking outward moreover.

The piston head 13 of syringe 1 is close to the one end of injection head 11 is equipped with injection liquid mixing part 6, before absorbing the medicine, extract earlier with the cerebrospinal fluid of liquid medicine equivalent, then open the check valve second check valve 41 of imbibition interface 4, pull the piston rod backward, at the in-process of piston rod pulling, injection liquid mixing part 6 can play the effect of stirring mixed liquid, and finally, the liquid medicine after the mixing slowly injects into the patient internal, and the liquid medicine of misce bene makes the human body more easily accept, and the effect is better.

When the puncture needle is used, the puncture needle core is firstly withdrawn, the outflow of cerebrospinal fluid is observed, then the injection head 11 is connected with the puncture needle interface, the piezometric tube is connected with the piezometric interface 3, the first one-way valve 31 is opened, and the pressure is measured; then the piezometer tube is taken down and the first one-way valve 31 is closed; after the test tube 2 is connected with the liquid collecting interface 5, the third one-way valve 51 is opened, the piston rod is pulled backwards until the liquid collecting interface 5 is exposed, namely cerebrospinal fluid flows into the test tube 2, and after collection, the third one-way valve 51 is closed and the test tube 2 is taken down; (the pressure can be measured again as required, the operation method is as above), slowly pulling back the piston rod, extracting cerebrospinal fluid with the same amount as the liquid medicine, then connecting the liquid medicine bottle with the liquid suction interface 4, opening the second one-way valve 41, slowly pulling back the piston rod until the liquid medicine is completely sucked, closing the second one-way valve 41, finally slowly pushing the piston rod towards the human body, and injecting the mixed liquid into the patient; the syringe 1 is taken down, the needle core is retracted, and then the puncture needle is removed completely.

Preferably, the injection blending part 6 comprises a thin rod 61 fixedly connected to the middle of the piston head 13 and a plurality of fan blades 62 fixed to the end of the thin rod 61, and the plurality of fan blades 62 are uniformly arranged along the axis of the thin rod 61. In the process of drawing back the piston rod to suck the liquid medicine, the fan blades 62 can play a certain stirring role to uniformly mix the liquid medicine and the cerebrospinal fluid.

Preferably, there are three of the fan blades 62.

Preferably, the total length and the total width of the flabellum 62 and the thin rod 61 are both smaller than the length and the inner diameter of the injection head 11, so that the flabellum 62 and the thin rod 61 can move in the injection head 11 conveniently, and the piston head 13 can be ensured to be at the left end to be abutted against the front end of the injection tube 11.

Preferably, the outer wall of the liquid collecting interface 5 is provided with an external thread 52, and the inner wall of the test tube 2 is provided with an internal thread 21 matched with the external thread 52.

Preferably, the pressure measuring port 3 and the liquid suction port 4 are respectively arranged at the upper end and the lower end of the injection head 11.

Preferably, the outer wall of the syringe barrel 12 is provided with scale marks 14, so that the amount of liquid in the syringe barrel 12 can be conveniently observed, and the ratio of the liquid medicine to the cerebrospinal fluid can be conveniently controlled.

Example two

Referring to fig. 1, 2 and 3, a lumbar puncture intrathecal injection device is different from the first embodiment in that it further comprises a support member 7 detachably connected with the test tube 2, and when collecting cerebrospinal fluid, the support member 7 can support the test tube 2, so as to prevent the weight of the test tube 2 from pulling down the puncture needle, thereby improving the comfort of the patient, and relieving the burden of the medical staff by releasing both hands.

Preferably, the supporting component 7 is an inflatable cone frustum, the upper end of the cone frustum is provided with a hemispherical groove 71, the side wall of the cone frustum is connected with an inflation and exhaust air pump 73 through an inflation tube 72, and the height of the cone frustum can be adjusted by inflating or exhausting air into the groove 71, so that the injector 1 and the puncture needle are kept in a horizontal state.

Preferably, the inner wall of the groove 71 is provided with a sponge 74, which has a better fixing effect on the test tube 2.

The present invention has been further described with reference to the examples, but the present invention is not limited to the above-described embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. The utility model provides a lumbar puncture intrathecal injection device, it includes syringe (1) and test tube (2), its characterized in that:

the injection head (11) of the injector (1) is respectively communicated with a pressure measuring interface (3) and a liquid suction interface (4), and the pressure measuring interface (3) and the liquid suction interface (4) are respectively provided with a first one-way valve (31) and a second one-way valve (41);

the lower end of an injection tube (12) of the injector (1) is communicated with a liquid collecting interface (5), and a third one-way valve (51) is arranged on the liquid collecting interface (5);

the liquid collecting interface (5) is detachably connected with the test tube (2);

and an injection blending part (6) is arranged at one end, close to the injection head (11), of a piston head (13) of the injector (1).

2. The intrathecal injection device for lumbar puncture according to claim 1, wherein the injection mixing component (6) comprises a thin rod (61) fixedly connected to the middle of the piston head (13) and a plurality of fan blades (62) fixed to the end of the thin rod (61), and the fan blades (62) are uniformly arranged along the axis of the thin rod (61).

3. The lumbar puncture intrathecal injection device as in claim 2, wherein said leaves (62) are three.

4. The lumbar puncture intrathecal injection device as in claim 3, characterized in that the total length and the total width of the blades (62) and the thin rods (61) are both smaller than the length and the inner diameter of the injection head (11).

5. The lumbar puncture intrathecal injection device as in claim 1, characterized in that the outer wall of the drip interface (5) is provided with an external thread (52) and the inner wall of the test tube (2) is provided with an internal thread (21) matching the external thread (52).

6. The lumbar puncture intrathecal injection device as in claim 1, characterized in that said pressure measuring port (3) and said aspiration port (4) are provided at the upper and lower ends of said injection head (11), respectively.

7. The lumbar puncture intrathecal injection device as in claim 1, wherein the outer wall of the syringe (12) is provided with graduations (14).

8. The lumbar puncture intrathecal injection device as in claim 1, further comprising a support member (7) removably connected to the test tube (2).

9. The intrathecal injection device for lumbar puncture as in claim 8, characterized in that the supporting component (7) is an inflatable truncated cone, the upper end of which is provided with hemispherical grooves (71), and the side wall of which is connected with an inflation/deflation pump (73) through an inflation tube (72).

10. The lumbar puncture intrathecal injection device as in claim 9, wherein the inner wall of the groove (71) is provided with a sponge (74).