CN111375121B

CN111375121B - Nerve block sleeve assembly

Info

Publication number: CN111375121B
Application number: CN202010193122.2A
Authority: CN
Inventors: 王焱
Original assignee: Nanjing Drum Tower Hospital
Current assignee: Nanjing Drum Tower Hospital
Priority date: 2020-03-18
Filing date: 2020-03-18
Publication date: 2022-05-17
Anticipated expiration: 2040-03-18
Also published as: CN111375121A

Abstract

The invention discloses a nerve block sleeve assembly which comprises a fixed guide tube, an inner sleeve drug injection guide tube, a drug injection port, a screwing screw sleeve, a screw fixing part, a split puncture needle and a telescopic deformation disc, wherein the fixed guide tube is a hollow tube body, the inner sleeve drug injection guide tube is inserted in the hollow tube body, the telescopic deformation disc is installed at the tail end of the fixed guide tube, a screw fixing device is fixedly installed at the head end of the fixed guide tube, the screwing screw sleeve is sleeved on the screw fixing device, the drug injection port is fixedly installed at the head end of the inner sleeve drug injection guide tube, and a plurality of uniformly arranged drug injection guide holes are formed in the tube wall at the tail end of the inner sleeve drug injection guide tube. Has the advantages that: according to the invention, the telescopic deformation disc is embedded in the soft tissue deep layer around the target nerve, so that the whole catheter is not easy to pull and displace, the local anesthetic is prevented from flowing out along the catheter from the subcutaneous tissue puncture, the analgesic effect is favorably improved, the displacement is not easy to occur, and the infection rate is reduced.

Description

Nerve block sleeve assembly

Technical Field

The invention relates to the field of nerve block auxiliary devices, in particular to a nerve block sleeve assembly.

Background

Pain is regarded as the fifth vital sign of human body, often appears in human life, can cause obvious adverse effect to the organism, bring various complications, some serious complications are fatal, such as myocardial infarction, hypertension, cerebral hemorrhage, etc., with people's demand for quality of life getting higher and higher, control to analgesic after operation gets more and more important; the interest and clinical use of regional nerve block continuous nerve peripheral catheters are increasing due to the attention on postoperative pain management, the main focus is on acute postoperative pain management, the regional nerve block technology refers to injecting local anesthetic around target nerves after defining the innervation (namely target nerves) of a pain region, blocking pain conduction, improving regional nerve block and providing good postoperative analgesia in operation, and greatly reducing the use of opioid and non-opioid analgesics, thereby reducing the occurrence of related complications and the use cost of related drugs, the application of the nerve peripheral catheters not only can provide better postoperative analgesia, but also can greatly reduce the dosage of narcotic analgesics of patients and alleviate the side effects caused by using narcotic drugs compared with the parenteral administration method or the conventional therapy of oral analgesics, such as lethargy, nausea, vomiting and cancer itching; in addition, for similar surgery, the postoperative analgesic effect of patients with persistent peripheral nerve block is superior to single dose peripheral nerve block at the same site. Besides, the indwelling nerve peripheral catheter can shorten the recovery period of function and the hospitalization period of the operation patient.

However, the traditional regional nerve block usually searches for nerves by means of body surface marks of human bodies, needling foreign body sensation or adopting a nerve stimulator exploring and positioning technology, the block success rate is low, and the safety is poor, in recent years, the nerve block technology under ultrasonic guidance is widely applied and rapidly developed, clinicians can observe peripheral nerves and peripheral structures thereof through ultrasonic imaging, puncture the periphery of target nerves under real-time and dynamic ultrasonic guidance, accurately implement nerve block, avoid damage to peripheral important tissue structures, reduce the occurrence probability of complications, improve the block efficiency, currently, the most long-acting local anesthetic effect in clinical use can be maintained for about 12-14 hours, clinically, a catheter must be left around the target nerves to achieve the purpose of long-time administration in order to prolong the analgesic effect, however, the peripheral nerves are generally shallow from the surface of the epidermis, the existing clinical method is that biological glue is smeared around a puncture after the catheter is placed in a puncture way, and meanwhile, a sterile adhesive film covers the catheter to achieve the purpose of fixing the catheter, and the indwelling catheter is easily taken out together when the sterile adhesive film is replaced, so that the blocking failure is caused.

Disclosure of Invention

It is an object of the present invention to provide a nerve block sleeve assembly that addresses the above problems.

The invention realizes the purpose through the following technical scheme:

the utility model provides a nerve block thimble assembly, includes fixed pipe, endotheca injection pipe, injection port, screws the swivel nut, the screw is fixed, components of a whole that can function independently pjncture needle and flexible deformation disc, fixed pipe be the cavity body, the internal grafting of hollow tube has endotheca injection pipe, the end of fixed pipe is installed flexible deformation disc, the head end fixed mounting of fixed pipe has the screw fixer, cup joint on the screw fixer the swivel nut, the head end fixed mounting of endotheca injection pipe has the injection port, set up a plurality of align to grid's injection guide hole on the terminal pipe wall of endotheca injection pipe, cup joint on the body of fixed pipe the components of a whole that can function independently pjncture needle is used for driving the fixed pipe puncture.

Furthermore, the split puncture needle consists of a puncture needle connecting piece and a needle body fixed on the puncture needle connecting piece.

Furthermore, the tail end of the needle body is an inclined opening for puncture, and the needle wall of the joint of the plane where the central line of the puncture needle connecting piece and the needle body is located and the puncture needle connecting piece and the needle body is a thin wall, so that the puncture needle connecting piece and the needle body can be torn open to form two half puncture needles, and the split puncture needle can be removed.

Furthermore, the telescopic deformation disc is of a mesh-shaped pipe structure, the mesh-shaped pipe structure is a disc body in a pressed state, and the mesh-shaped pipe structure is a pipe body in a non-pressure state.

Further, the screw fixer comprises a screw piece and a screw piece fixing piece fixed on the fixed conduit, the screw piece is a semi-arc screw piece, the semi-arc screw piece is provided with two pieces, the semi-arc screw piece is fixedly installed on the screw piece fixing piece, and the outer surface of the screw piece is provided with an external thread.

Furthermore, an internal thread is arranged on the inner wall of the sleeve body of the screwing thread sleeve, and the screwing thread sleeve is screwed to the two semi-arc-shaped screw pieces and used for clamping the inner sleeve medicine injection guide pipe.

In the structure, the nerve block sleeve assembly is a double-sleeve structure catheter, the outer layer is a fixed catheter, the front end is a telescopic deformation disc used for fixing the whole catheter on muscles or fascia around a target nerve, the inner tube is an inner sleeve drug injection catheter, the inner diameter of a split puncture needle is matched with the outer diameter of the fixed catheter, the development is carried out under ultrasonic impression, the middle part of the split puncture needle is a weak area, namely a thin wall, when the puncture catheter is placed, the thin wall of the split puncture needle can be torn open by exerting force from the upper direction and the lower direction, the split puncture needle is removed, the whole fixed catheter is fixed on the muscles or the fascia around the target nerve, the rear end is provided with a screw fixer, when the split puncture needle is screwed down, the upper and the lower screw sheets of the inner screw are tightened to fix the inner sleeve drug injection catheter, so that the inner sleeve drug injection catheter and the fixed catheter do not displace, when the screw fixer is loosened, the inner sleeve drug injection catheter can freely move forwards or backwards, the rear end of the inner sleeve drug injection catheter is provided with a drug injection port which can be connected with an injector, the front section of the catheter is provided with a side hole which is convenient for local anesthetic to diffuse to peripheral nerve tissues, nerves all run between muscle fascias, the local anesthetic is injected around a target nerve when the nerves are blocked, a liquidity gap can be formed between the muscle fascias around the target nerve when the nerve block is blocked, after the fixed catheter reaches the periphery of the target nerve, the fixed catheter can be pushed forwards to open the telescopic deformation disk, the telescopic deformation disk is clamped on the muscle after the telescopic deformation disk is opened to ensure that the whole catheter is not easy to be pulled and displaced, the proper length is selected according to the distance from the target nerve to the muscle fascias the fixed catheter extends to the periphery of the target nerve, and the screw fixator can fix the inner sleeve drug injection catheter without displacing forwards or backwards after being screwed down, the tail end of the whole catheter is provided with a medicine injection guide hole of the medicine injection catheter in the inner sleeve, when the device needs to be removed, the screw fastener is firstly loosened, then the fixing catheter is moved backwards to enable the fixing disc to recover the tubular structure, and finally the inner sleeve and the outer sleeve are withdrawn from the body together.

Has the advantages that: the nerve block sleeve assembly is embedded in the deep layer of soft tissue around a target nerve through the telescopic deformation disc, so that the whole catheter is not easy to pull and shift, the internal liquid medicine catheter is fixed through the screw fixator, the disc can also effectively block a potential gap between the catheter and a deep subcutaneous tissue puncture, local anesthetic is prevented from flowing out from the subcutaneous tissue puncture along the catheter, the analgesia effect is improved, the liquid medicine catheter is not easy to shift, the telescopic deformation disc can seal the puncture wound from inside to outside, namely, the puncture wound is towards the skin direction from the subcutaneous tissue around the target nerve, external bacteria and other pollutants are prevented from entering the body, and the infection occurrence rate is reduced.

Drawings

FIG. 1 is a general block diagram of a nerve block sleeve assembly according to the present invention;

FIG. 2 is a view showing the extended structure of an indwelling catheter of the nerve block sheath assembly of the present invention;

FIG. 3 is a puncture configuration view of a nerve block sleeve assembly according to the present invention;

figure 4 is a block diagram of a screw retainer for a nerve block sleeve assembly according to the present invention.

The reference numerals are explained below: 1. fixing the catheter; 2. the drug injection catheter is sleeved inside; 3. a drug injection port; 4. screwing the threaded sleeve; 5. a screw fixer 51, a screw sheet fixer 52 and a screw sheet; 6. a split puncture needle 61, a puncture connecting piece 62, a needle body 63 and a thin wall; 7. a flexible deformation disc; 8. and a medicine injection guide hole.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The invention will be further described with reference to the accompanying drawings in which:

as shown in fig. 1-4, the nerve block sleeve assembly is composed of a fixed catheter 1, an inner sleeve drug injection catheter 2, a drug injection port 3, a screwing threaded sleeve 4, a threaded fastener 5, a split puncture needle 6 and a telescopic deformation disc 7.

The fixed guide pipe 1 is a hollow pipe body, an inner sleeve medicine injection guide pipe 2 is inserted in the hollow pipe body, a telescopic deformation disc 7 is installed at the tail end of the fixed guide pipe 1, a screw fixer 5 is fixedly installed at the head end of the fixed guide pipe 1, and a screwing screw sleeve 4 is sleeved on the screw fixer 5.

The head end of the inner sleeve medicine injection guide pipe 2 is fixedly provided with a medicine injection port 3, and the tail end pipe wall of the inner sleeve medicine injection guide pipe 2 is provided with a plurality of medicine injection guide holes 8 which are uniformly arranged.

A split puncture needle 6 is sleeved on the tube body of the fixed catheter 1 and is used for driving the fixed catheter 1 to puncture.

In the present embodiment, the split puncture needle 6 is composed of a puncture needle connector 61 and a needle body 62 fixed to the puncture needle connector 61.

Preferably, the end of the needle body 62 is a bevel for puncturing, and the needle wall at the intersection of the plane of the center lines of the puncture needle connecting piece 61 and the needle body 62 and the puncture needle connecting piece 61 and the needle body 62 is a thin wall 63, so that the two half puncture needles can be torn to form two half puncture needles, and the split puncture needle 6 can be removed.

In this embodiment, the flexible disk 7 has a mesh structure, the mesh structure is too pressed to be a disk body, and the mesh structure is a tube body in a non-pressed state.

In this embodiment, the screw fixer 5 comprises a screw fixing member 51 and a screw 52 fixed on the fixing catheter 1, the screw 52 is a half-arc screw, the half-arc screw is provided with two pieces, the half-arc screw is fixedly mounted on the screw fixing member 51, and the outer surface of the screw 52 is provided with an external thread.

In this embodiment, the inner wall of the sleeve body of the screwing thread sleeve 4 is provided with an internal thread, and the screwing thread sleeve 4 is screwed to the two semi-arc-shaped screw pieces for clamping the inner sleeve injection catheter 2.

In the structure, the nerve block sleeve assembly is a double-sleeve structure catheter, the outer layer is a fixed catheter 1, the front end is a telescopic deformation disc 7 which is used for fixing the whole catheter on muscles or fascia around a target nerve, the inner tube is an inner sleeve medicine injection catheter 2, the inner diameter of a split puncture needle 6 is matched with the outer diameter of the fixed catheter 1, development is carried out under ultrasonic impression, the middle part of the split puncture needle 6 is a weak area, namely a thin wall 63, when puncture catheterization is completed, force can be exerted from the upper direction and the lower direction to tear the thin wall 63 of the split puncture needle 6, the split puncture needle 6 is removed, the whole fixed catheter 1 is fixed on the muscles or the fascia around the target nerve, the rear end is provided with a screw fixer 5, when the puncture cannula is screwed, the upper screw sheet 52 and the lower screw sheet of an inner screw are tightened to fix the inner sleeve medicine injection catheter 2, so that the inner sleeve medicine injection catheter 2 and the fixed catheter 1 do not displace, when the screw fixator 5 is loosened, the inner sleeve drug injection catheter 2 can freely move forwards or backwards, the rear end of the inner sleeve drug injection catheter 2 is provided with a drug injection port 3 which can be connected with an injector, the front section of the catheter is provided with a side hole which is convenient for local anesthetic to diffuse to peripheral nerve tissues, nerves all run between muscle fascia, the local anesthetic is injected around a target nerve when the nerves are blocked, a liquidity gap can be formed between the muscle fascia around the target nerve when the nerve is blocked, after the fixed catheter 1 reaches the periphery of the target nerve, the telescopic deformation disc 7 can be pushed forwards to be opened, after the telescopic deformation disc 7 is opened, the disc is formed to be clamped on the muscle fascia, so that the whole catheter is not easy to be pulled and displaced, and the proper length is selected according to the distance between the target nerve and the muscle fascia at the edge to stretch from the fixed catheter 1 to the periphery of the target nerve, the screw fixer 5 can fix the inner sleeve drug injection catheter 2 after being screwed down and does not move forwards and backwards any more, the tail end of the whole catheter is the drug injection guide hole 8 of the inner sleeve drug injection catheter 2, when the device needs to be removed, the screw fixer 5 is firstly loosened, then the fixed catheter 1 is moved backwards to enable the fixed disc to recover the tubular structure, and finally the inner sleeve and the outer sleeve are withdrawn from the body together.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A nerve block sleeve assembly, comprising: the medical injection needle comprises a fixed catheter, an inner sleeve medical injection catheter, a medical injection port, a screwing threaded sleeve, a threaded fastener, a split puncture needle and a telescopic deformation disc, wherein the fixed catheter is a hollow tube body, the inner sleeve medical injection catheter is inserted into the hollow tube body, the telescopic deformation disc is installed at the tail end of the fixed catheter, the threaded fastener is fixedly installed at the head end of the fixed catheter, the screwing threaded sleeve is sleeved on the threaded fastener, the medical injection port is fixedly installed at the head end of the inner sleeve medical injection catheter, a plurality of uniformly-arranged medical injection guide holes are formed in the tube wall at the tail end of the inner sleeve medical injection catheter, and the split puncture needle is sleeved on the tube body of the fixed catheter and used for driving the fixed catheter to puncture; the telescopic deformation disc is of a net-shaped pipe structure, the net-shaped pipe structure is a disc body in a compressed state, and the net-shaped pipe structure is a pipe body in a non-pressure state; the nerve block sleeve component is a double-sleeve structure catheter, the outer layer is a fixed catheter, the front end of the fixed catheter is a telescopic deformation disc used for fixing the whole catheter on muscles or fascia around a target nerve, the inner tube is an inner sleeve drug injection catheter, a drug injection port at the head end of the inner sleeve drug injection catheter is used for providing drugs, a plurality of uniformly arranged drug injection guide holes are formed in the tube wall at the tail end of the inner sleeve drug injection catheter for injecting drugs, and a screw socket fixer at the head end of the fixed catheter is used for fixing the inner sleeve drug injection catheter and enabling the inner sleeve drug injection catheter and the fixed catheter not to displace; when in use, the nerve block sleeve assembly can tear the thin wall of the puncture needle by exerting force from the upper direction and the lower direction when the puncture is carried out, the puncture needle is removed, the whole fixed catheter is fixed on the muscle or fascia at the periphery of a target nerve, the screw fixer is screwed and fixed on the inner sleeve drug injection catheter, so that the inner sleeve drug injection catheter and the fixed catheter do not displace, the tail end of the whole catheter is the drug injection guide hole of the inner sleeve drug injection catheter, the drug injection guide hole arranged at the side part facilitates diffusion of local anesthetic to peripheral nerve tissues, the nerve runs between the muscle fascias, the local anesthetic is injected around the target nerve during nerve block, a liquidity gap is formed between the muscle fascias at the periphery of the target nerve when the nerve block is blocked, and the liquidity gap can push forward to open the telescopic disc after the fixed catheter reaches the periphery of the target nerve, after the telescopic deformation disc is opened, the disc body is clamped on the muscle fascia at the liquidity gap, so that the whole catheter is not easy to pull and displace.

2. The nerve block sleeve assembly of claim 1, wherein: the split puncture needle consists of a puncture needle connecting piece and a needle body fixed on the puncture needle connecting piece.

3. The nerve block sleeve assembly of claim 2, wherein: the tail end of the needle body is an inclined opening for puncture, and the needle wall of the junction of the plane where the central line of the puncture needle connecting piece and the needle body is located and the puncture needle connecting piece and the needle body is a thin wall, so that the needle body can be conveniently torn to form two half-body puncture needles, and the split puncture needle can be removed.

4. The nerve block sleeve assembly of claim 1, wherein: the screw fastener comprises a screw piece and a screw piece fixing piece fixed on the fixed conduit, the screw piece is a semi-arc screw piece, the semi-arc screw piece is provided with two pieces, the semi-arc screw piece is fixedly installed on the screw piece fixing piece, and the outer surface of the screw piece is provided with an external thread.

5. The nerve block sleeve assembly of claim 4, wherein: the inner wall of the sleeve body of the screwing thread sleeve is provided with internal threads, and the screwing thread sleeve is screwed on the two semi-arc-shaped screw pieces and used for clamping the inner sleeve medicine injection guide pipe.