CN211023007U - Special lumbar puncture needle for neonates - Google Patents

Abstract

The utility model discloses a lumbar puncture needle special for neonates, which comprises a puncture needle body and an indwelling needle sleeve sleeved on the puncture needle body, wherein the puncture needle body is divided into a puncture needle front section and a puncture needle rear section, and the diameter of the puncture needle rear section is smaller than that of the puncture needle front section; the rear end of the indwelling needle sleeve is connected with a needle seat communicated with the indwelling needle sleeve, and a snap ring is arranged in the needle seat; the inner diameter of the snap ring is smaller than the front section of the puncture needle and larger than the rear section of the puncture needle; a drainage hose connected with a cerebrospinal fluid pressure gauge is arranged on the side wall of the needle base; the drainage hose is communicated with the cavity in the needle base. The special lumbar puncture needle for the neonate can repeatedly puncture after one puncture failure without replacing the puncture needle, thereby reducing the consumption of the number of the puncture needles; meanwhile, the solid puncture needle can be withdrawn after the puncture is successful, and only the indwelling needle sleeve is reserved in the body, so that the risk of injury is greatly reduced; but also effectively solves the problem of measuring the cerebrospinal fluid pressure when the lumbar puncture of the newborn baby is carried out.

Description

Special lumbar puncture needle for neonates

Technical Field

The utility model relates to a lumbar puncture needle, in particular to a lumbar puncture needle suitable for a neonate.

Background

Lumbar puncture is a common invasive operation in the diagnosis and treatment of neonatal diseases, is an important examination method for diagnosing encephalitis, meningitis and other diseases, and is also a common method for cerebrospinal fluid drainage and intrathecal injection of medicaments. The distance from the skin to the subarachnoid space is short, and the subarachnoid space is narrow, so that the puncture difficulty is high; neonates do not operate in an active cooperation mode, and often need to be sedated by using sedative drugs in advance, but still many neonates have poor sedative effect and restlessness, so that puncture is not easy to succeed. The puncture needle adopted by the traditional lumbar puncture has thick diameter, large damage and easy bleeding, and is not suitable for newborns; most medical institutions use 5.5# scalp vein needles to replace traditional lumbar puncture needles for neonatal lumbar puncture, but despite the advantages, many problems are still found in clinical practice.

The needle point of the scalp vein needle is provided with an inclined plane and is sharp, and blood vessels and surrounding tissues are easy to be punctured in the puncturing process; even if the puncture is successful, the metal puncture needle still needs to be kept in the vertebral canal, and at the moment, if the sick child is agitated or an operator is improperly fixed, injury bleeding or needle point position change can be easily caused, so that cerebrospinal fluid drainage is not smooth, and even drainage fails; if the lumbar puncture is carried out again, a new scalp vein needle is often required to be replaced, so that the consumption quantity of the equipment is increased; in addition, the flexible tube of the scalp vein needle is long and easy to bend and kink, so that the drainage of cerebrospinal fluid is influenced, the pressure of the cerebrospinal fluid cannot be accurately measured, and the pressure of the cerebrospinal fluid can be estimated only by measuring the dripping speed per minute of the cerebrospinal fluid or measuring the vertical distance between the cerebrospinal fluid plane and the puncture plane after lifting the flexible tube of the scalp vein needle. Therefore, mixed blood or pollution of cerebrospinal fluid specimens is caused, the cerebrospinal fluid detection value is inaccurate, diagnosis by a clinician is not facilitated, and the condition of an infant patient is further influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a special lumbar puncture needle for neonates for solve above-mentioned problem, so that more be applicable to among the clinical practice.

In order to solve the technical problems, the technical scheme of the utility model is to adopt a special lumbar puncture needle for neonates, which comprises a puncture needle body and an indwelling needle sleeve sleeved on the puncture needle body, wherein the puncture needle body is divided into a puncture needle front section and a puncture needle rear section, and the diameter of the puncture needle rear section is smaller than that of the puncture needle front section; the rear end of the indwelling needle sleeve is connected with a needle seat communicated with the indwelling needle sleeve, and a snap ring is arranged in the needle seat; the inner diameter of the snap ring is smaller than the front section of the puncture needle and larger than the rear section of the puncture needle; a drainage hose connected with a cerebrospinal fluid pressure gauge is arranged on the side wall of the needle base; the drainage hose is communicated with the cavity in the needle base.

As an improvement, the indwelling needle sleeve is made of fluorinated ethylene propylene copolymer (FEP) or polyurethane, and the inner diameter of the indwelling needle sleeve is consistent with the outer diameter of the front section of the puncture needle; the cavity of the needle seat is consistent with the inner diameter of the indwelling needle sleeve. The remaining needle sleeve is inserted into the human body together by the puncture needle when the puncture is convenient.

As a further improvement, the front end of the remaining needle sleeve and the end part of the front section of the puncture needle are both inclined planes, so that the puncture is easier.

As an improvement, the distance from the snap ring to the front end of the needle seat is longer than the length of the front section of the puncture needle, so that the lower side of the front end inclined plane of the puncture needle is flush with the inlet of the drainage hose when the rear end of the front section of the puncture needle is pulled to the snap ring. The front section of the puncture needle can completely withdraw from the indwelling needle sleeve, so that a passage is formed among the indwelling needle sleeve, the needle seat and the drainage hose, and cerebrospinal fluid is not left in the cavity of the needle seat.

As another further improvement, the needle base is provided with a hand grip which is convenient to hold.

As an improvement, the drainage hose is provided with a restrictor. For cutting off the drainage hose.

As an improvement, the tail end of the drainage hose is provided with a joint. The drainage hose is convenient to be connected with the cerebrospinal fluid pressure measuring instrument.

Preferably, the puncture needle front section is a solid steel needle. The puncture needle is used for ensuring that cerebrospinal fluid is not left after successful puncture and reducing the risk of breaking the puncture needle.

As an improvement, a grab handle is arranged at the tail end of the rear section of the puncture needle. The indwelling needle sleeve is convenient to pull out the front section of the puncture needle, and the grab handle is arranged at the lowest side of the inclined plane at the front end of the front section of the puncture needle and used for marking the lowest part of the inclined plane.

The utility model comprises a front section and a rear section of a solid (hard) puncture needle and a hollow (soft) indwelling needle sleeve tightly sleeved on the front section, wherein the puncture needle is divided into a front section and a rear section, and the diameter of the front section is slightly larger than the rear section. The front section is used for puncturing and guiding the indwelling needle sleeve to enter the infant patient, and the junction of the front section and the rear section can facilitate the puncture to clamp the puncture needle when the puncture needle is successfully retreated out of the puncture needle so that the puncture needle cannot fall off; the indwelling needle sleeve extends into the needle seat, the front section in the needle seat is divided into two branches, one branch is vertically extended to the position of the snap ring in the needle seat, and the other branch gradually moves out of the interior of the needle seat and is communicated with the drainage hose; a snap ring is arranged in the needle seat, and the needle seat parts except the indwelling needle sleeve are all solid without gaps; the inner diameter of the snap ring is smaller than the front section of the puncture needle and larger than the rear section of the puncture needle, so that the junction of the front section and the rear section of the puncture needle can be clamped right; a grab handle is arranged on one side outside the needle seat to facilitate the control operation, and a drainage hose is arranged on the opposite side of the needle seat to drain cerebrospinal fluid (the needle tip inclined plane of the solid puncture needle and the drainage hose are arranged on the same side); the tail end of the drainage hose is provided with a joint so as to be convenient for receiving and taking a cerebrospinal fluid sample and connecting a cerebrospinal fluid pressure tester; a flow controller is arranged outside the middle section of the drainage hose so as to conveniently control the drainage speed of cerebrospinal fluid or block the cerebrospinal fluid.

The utility model creatively designs a solid puncture needle, and the diameters of the front and the rear sections are different, the snap ring, the indwelling needle sleeve, the hose and the structure similar to the inverted Y shape, etc. It has the advantages that:

1. if the puncture fails once, the solid puncture needle can ensure that no substance is left in the puncture needle to block the needle tube, and then the puncture can be repeated for a plurality of times without replacing the puncture needle, thereby reducing the consumption of the number of the puncture needles.

2. If the puncture is successful, the solid puncture needle can be withdrawn and only the indwelling needle sleeve is reserved in the body, even if the child patient restlesss, the injury can not be caused, and the risk of bleeding caused by the injury of the child patient is greatly reduced.

3. After the puncture succeeds, when withdrawing the solid pjncture needle, because of the existence of snap ring, the anterior segment needle point of solid pjncture needle just in time keeps off under the branching of keeping somewhere the needle cover, can guide among the cerebrospinal fluid only can flow to the drainage hose, the improper of cerebrospinal fluid has been prevented to remain, the drainage hose is straight not long and long simultaneously, can not crooked the coiling, the flow controller in its middle section can conveniently control the drainage speed of cerebrospinal fluid, its end has the joint that can supply to connect the cerebrospinal fluid pressure gauge, measure cerebrospinal fluid pressure's difficult problem when having solved neonate's lumbar puncture effectively. Thereby greatly reducing the probability of mixed blood or pollution of the cerebrospinal fluid specimen, increasing the objective accuracy of the cerebrospinal fluid detection value, being more beneficial to the diagnosis and treatment of relevant diseases by clinicians and the rehabilitation of children patients.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of the front section of the puncture needle withdrawing the indwelling needle guard.

The labels in the figure are: 1 front section of puncture needle, 2 rear sections of puncture needle, 3 indwelling needle sleeves, 4 needle seats, 5 snap rings, 6 handgrips, 7 drainage hoses, 8 throttles, 9 connectors and 10 handgrips.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the specific embodiments.

As shown in fig. 1 and 2, the utility model comprises a puncture needle body and an indwelling needle sleeve 3 sleeved on the puncture needle body, wherein the puncture needle body is divided into a puncture needle front section 1 and a puncture needle rear section 2, and the diameter of the puncture needle rear section 2 is smaller than that of the puncture needle front section 1; the rear end of the indwelling needle sleeve 3 is connected with a needle seat 4 communicated with the indwelling needle sleeve 3, and a snap ring 5 is arranged in the needle seat 4; the inner diameter of the snap ring 5 is smaller than that of the puncture needle front section 1 and larger than that of the puncture needle rear section 2; a drainage hose 7 used for being connected with a cerebrospinal fluid pressure gauge is arranged on the side wall of the needle base 4; the drainage hose 7 is communicated with the cavity in the needle stand 4.

The remaining needle sleeve 3 is made of fluorinated ethylene propylene copolymer (FEP) or polyurethane, and the inner diameter of the remaining needle sleeve is consistent with the outer diameter of the front section 1 of the puncture needle; the cavity of the needle seat 4 is consistent with the inner diameter of the remaining needle sleeve 3.

The front end of the remaining needle sleeve 3 and the end part of the puncture needle front section 1 are inclined planes, the distance from the snap ring 5 to the front end of the needle seat 4 is greater than the length of the puncture needle front section 1, so that the lower side of the front end inclined plane of the puncture needle front section 1 is flush with the inlet of the drainage hose 7 when the rear end of the puncture needle front section 1 is pulled to the snap ring 5.

The drainage hose 7 is provided with a restrictor 8 for cutting off the drainage hose. The tail end of the drainage hose 7 is provided with a joint 9.

The needle seat 4 is provided with a hand grip 6 which is convenient to hold. The tail end of the back section 2 of the puncture needle is provided with a grab handle 10. The grip handle 6 is used for holding during puncture, and the grip handle 10 is used for pulling the puncture needle front section 1 out of the indwelling needle sheath 3.

When in use, the puncture needle front section 1 penetrates into the indwelling needle sleeve 3 and penetrates into a human body together with the indwelling needle sleeve 3. After the puncture is successful, the front section 1 of the puncture needle withdraws from the indwelling needle sleeve 3, so that the indwelling needle sleeve 3, the needle seat 4 and the drainage hose 7 form a passage to introduce cerebrospinal fluid into the cerebrospinal fluid pressure measuring instrument. When the puncture is needed again, the puncture needle front section 1 is pushed into the remaining needle sleeve 3 again.

The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and enhancements can be made without departing from the spirit and scope of the invention, and such modifications and enhancements are intended to be within the scope of the invention.

Claims (9)

1. The utility model provides a special lumbar puncture needle of neonate, includes pjncture needle body and overlaps the needle cover of keeping somewhere on pjncture needle body, its characterized in that: the puncture needle body is divided into a puncture needle front section and a puncture needle rear section, and the diameter of the puncture needle rear section is smaller than that of the puncture needle front section; the rear end of the indwelling needle sleeve is connected with a needle seat communicated with the indwelling needle sleeve, and a snap ring is arranged in the needle seat; the inner diameter of the snap ring is smaller than the front section of the puncture needle and larger than the rear section of the puncture needle; a drainage hose connected with a cerebrospinal fluid pressure gauge is arranged on the side wall of the needle base; the drainage hose is communicated with the cavity in the needle base.

2. The special lumbar puncture needle for neonates according to claim 1, characterized in that: the indwelling needle sleeve is made of fluorinated ethylene propylene copolymer or polyurethane, and the inner diameter of the indwelling needle sleeve is consistent with the outer diameter of the front section of the puncture needle; the cavity of the needle seat is consistent with the inner diameter of the indwelling needle sleeve.

3. The special lumbar puncture needle for neonates according to claim 1, characterized in that: the front end of the remaining needle sleeve and the end part of the front section of the puncture needle are inclined planes.

4. The special lumbar puncture needle for neonates according to claim 3, characterized in that: the distance from the snap ring to the front end of the needle seat is greater than the length of the front section of the puncture needle, so that the lower side of the front end inclined plane of the rear end of the front section of the puncture needle is flush with the inlet of the drainage hose when the rear end of the front section of the puncture needle is pulled to the snap ring.

5. The special lumbar puncture needle for neonates according to claim 1, characterized in that: the needle base is provided with a hand grip convenient to hold.

6. The special lumbar puncture needle for neonates according to claim 1, characterized in that: the drainage hose is provided with a restrictor.

7. The special lumbar puncture needle for neonates according to claim 1, characterized in that: the tail end of the drainage hose is provided with a joint.

8. The special lumbar puncture needle for neonates according to claim 1, characterized in that: the front section of the puncture needle is a solid steel needle.

9. The special lumbar puncture needle for neonates according to claim 1, characterized in that: a grab handle is arranged at the tail end of the rear section of the puncture needle.

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