CN213884289U

CN213884289U - Local anesthesia paster

Info

Publication number: CN213884289U
Application number: CN202021376116.2U
Authority: CN
Inventors: 单惠萍
Original assignee: Second Hospital Iaxing
Current assignee: Second Hospital Iaxing
Priority date: 2020-07-14
Filing date: 2020-07-14
Publication date: 2021-08-06
Anticipated expiration: 2030-07-14

Abstract

The utility model discloses a local anesthesia paster, which is sequentially provided with a self-heating layer, a supporting layer, an isolating layer, an adhesive layer and a protective paster layer from top to bottom, wherein an anesthetic layer and the adhesive layer are positioned on the same layer; the spontaneous heating layer is connected with the supporting layer, the supporting layer is connected with the isolating layer, the isolating layer is connected with the bonding layer, and the isolating layer is connected with the anesthetic layer through adhesives; the bonding layer is distributed on the periphery of the anesthetic layer, and removable protective adhesive layers are attached to the surfaces of the bonding layer and the anesthetic layer; the anesthetic layer comprises a plurality of anesthetic units, each anesthetic unit comprises an anesthetic coating film and an anesthetic arranged in the anesthetic coating film, and the anesthetic coating film on the surface, which is in contact with the protective layer, is a water-soluble polymer film. The local anesthesia paster provided by the utility model has the advantages of quick drug effect, difficult drug effect loss, simple operation and the like.

Description

Local anesthesia paster

Technical Field

The utility model belongs to the field of medical supplies, particularly, relate to a local anesthesia paster.

Background

Anesthesia, as the name implies, means that a patient temporarily loses sensation, either entirely or locally, by medication or other means, and has been treated by surgery with the goal of being painless. Clinically, anesthesia is generally classified into the following categories: 1. surface anesthesia (surface anesthesia) is a method of anesthetizing a sub-mucosal nerve end by applying a highly permeable local anesthetic to the mucosal surface as needed. 2. Infiltration anesthesia (infiltration and anesthesia) is a method of anesthetizing local nerve endings by injecting a local anesthetic solution into the tissues under the skin or near the operative field. 3. Conduction anesthesia (reduction anesthesia) is a technique in which local anesthetic is injected near the peripheral nerve trunk to block nerve impulse conduction and anesthetize the region where the nerve is distributed. 4. Subarachnoid space anesthesia (subarachnoid space) also called spinal anesthesia or lumbar anesthesia (spinal subarachnoid space) is to inject an anesthetic into the subarachnoid space of the lumbar vertebra to anesthetize the spinal nerve root at the site. 5. Epidural anesthesia (epidural anaesthesia) is a medical fluid injected into the epidural space, which diffuses along the nerve sheath and blocks the nerve roots through the intervertebral foramen. 6. Regional analgesia (regional analgesia) in recent years, the development of peripheral nerve block technology and local anesthetics has provided patients with a more ideal perioperative effective method of analgesia, and is often used in combination with opioids to reduce the amount of opioid.

For local anesthesia of skin before superficial minor operations in dermatology and surgery and various needle punctures, an anesthetic paste or an anesthetic application is generally used, and after being applied or applied to the skin and absorbed, an anesthetic effect is locally produced. There are also many reports on such local anesthetic products in the prior art.

The utility model with the application number of 200810050305.8 discloses a thermosensitive surface anesthesia plaster, which is characterized in that an anesthesia drug emulsion layer is covered under a bottom layer, a self-heating layer is covered on the bottom layer, a surface layer is covered on the self-heating layer, the periphery of the surface layer is sealed with the periphery of the bottom layer, wherein the anesthesia drug emulsion layer contains an emulsification mixture of anesthesia drugs and inactive substances; the anesthetic is an emulsified mixture of oil phase of 75 mg of lidocaine and 75 mg of tetracaine, and can block ion channels required by nerve impulse generation and conduction by accumulating lidocaine and tetracaine at cortical pain receptors and nerve endings, so as to generate local anesthetic effect.

Still disclose an anesthesia subsides for local operation as utility model application number 201420222270.2 in, including the body, the medial surface of body is equipped with the infiltration piece, and the infiltration piece forms inclosed cavity with the body, is equipped with solid anesthetic in the cavity, and one side of keeping away from anesthetic of infiltration piece is equipped with the strip of paper used for sealing, and the inboard edge of body is equipped with annular adhesive linkage, and the adhesive linkage is located between strip of paper used for sealing and the body. A liquid bag is arranged in the cavity, and diluent for diluting the solid anesthetic is arranged in the liquid bag; the fixing seat is provided with a puncture needle, the end part of the puncture needle is positioned on the fixing seat, and the sharp part of the puncture needle is positioned in the cavity and keeps a distance with the liquid bag. When the liquid bag is not used, the liquid bag is in a sealed state, and when the liquid bag is used, the liquid bag needs to be punctured to discharge the diluent, so that a puncturing needle is arranged below the liquid bag in a position corresponding to the position of the liquid bag, and the fixed seat is squeezed, so that the puncturing needle can puncture the liquid bag.

In the prior art, the former is that a protective adhesive layer is arranged outside a latex layer containing anesthetic; the latter is to release the anesthetic drug by storing the solid anesthetic separately from the liquid diluent and puncturing the liquid bag with a puncturing needle prior to use. The former has the defects of short storage time, easy loss of drug effect along with the loss of time and no contribution to the development of anesthesia; the latter has the disadvantages of complicated operation and slow drug action.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model aims to provide a local anesthesia patch which has the advantages of quick drug effect, difficult drug effect loss and simple operation.

The utility model provides a technical scheme that technical problem adopted is: a local anesthesia patch comprises a self-heating layer, a supporting layer, an isolation layer, an adhesive layer and a protective adhesive layer from top to bottom in sequence, wherein an anesthetic layer and the adhesive layer are positioned on the same layer; the spontaneous heating layer is connected with the supporting layer, the supporting layer is connected with the isolating layer, the isolating layer is connected with the bonding layer, and the isolating layer is connected with the anesthetic layer through adhesives; the bonding layer is distributed on the periphery of the anesthetic layer, and removable protective adhesive layers are attached to the surfaces of the bonding layer and the anesthetic layer; the anesthetic layer comprises a plurality of anesthetic units, each anesthetic unit comprises an anesthetic coating film and an anesthetic arranged in the anesthetic coating film, and the anesthetic coating film on the surface, which is in contact with the protective layer, is a water-soluble polymer film.

Further, the water-soluble polymer film is one or more than two of hyaluronic acid and its derivative film, collagen film, proteoglycan film, hydroxypropyl cellulose film, carboxymethyl cellulose film, polyvinyl pyrrolidone film or polyethylene glycol film.

Further, the anesthetic in each anesthetic unit is a gel-like anesthetic.

Further, the shape of the anesthetic unit is any one of a circle, a square, a rectangle, a diamond, an ellipse, and a semicircle.

Furthermore, the self-heating layer contains a plurality of heating agents, and the plurality of heating agents generate heat after chemical reaction and can generate constant temperature of 45-50 ℃. Such as iron powder, active carbon, inorganic salt, water and other mixtures, can generate oxidation exothermic reaction under the action of oxygen in the air.

The local anesthesia patch is used in the following way: firstly, a body part needing local anesthesia is wiped by sterile water, after the local anesthesia patch is detached from a packaging bag, a protective adhesive layer on the anesthesia patch is removed, one surface containing an anesthetic layer and an adhesive layer is attached to the moistened skin, and the anesthetic in an anesthetic unit can be released to act on the surface of the skin and permeate into the subcutaneous part through the skin to play a role in anesthesia because an anesthetic coating film in contact with the skin is a water-soluble polymer film and can be dissolved, swelled or degraded after meeting water. When above-mentioned local anesthesia paster is torn out from the wrapping bag, the agent that generates heat in the layer of generating heat from contacting the air, under the effect of oxygen in the air, takes place chemical reaction and releases the heat for under this thermal effect, the infiltration rate of anesthetic is accelerated, shortens the time of onset of anesthetic, has improved anesthesia efficiency.

The utility model has the advantages that: compared with the prior art, the utility model provides a local anesthesia paster has following several advantages:

1) the water-soluble polymer film is used as a coating film of the anesthetic unit, so that the drug effect is convenient to store and maintain, and the anesthetic can be released only by wetting the anesthetic coating film with a small amount of water to dissolve the anesthetic coating film;

2) the self-heating layer is arranged, the heating agent in the self-heating layer releases heat through chemical reaction after contacting air, the generated heat can promote the permeation of the anesthetic, the onset time of the anesthetic is shortened, and the anesthetic efficiency is improved;

3) an isolation layer is arranged to prevent the anesthetic from diffusing upwards; the gel-like anesthetic is adopted, so that the permeation speed of the anesthetic is convenient to control.

Drawings

Fig. 1 is a schematic view of a sectional structure of a local anesthetic patch according to the present invention.

Fig. 2 is a schematic front structural view of the local anesthesia patch provided by the present invention.

Fig. 3 is a schematic view of a local structure of an anesthesia layer in the local anesthesia patch of the present invention.

Wherein, 1-a heat generating agent; 2-self-heating layer; 3-a support layer; 4-an isolation layer; 5-an adhesive layer; 6-protective paste layer; 7-anesthetic layer; 8-an anesthetic; 9-water-soluble polymer film.

Detailed Description

The invention will be further illustrated by the following specific examples in conjunction with fig. 1-3. These examples are intended to illustrate the invention and are not intended to limit the scope of the invention.

Example 1

As shown in fig. 1-3, a local anesthetic patch comprises a spontaneous heating layer 2, a supporting layer 3, an isolation layer 4, an adhesive layer 5 and a protective adhesive layer 6 from top to bottom, wherein an anesthetic layer 7 and the adhesive layer 5 are located on the same layer; the spontaneous heating layer 2 is connected with the supporting layer 3, the supporting layer 3 is connected with the isolating layer 4, the isolating layer 4 is connected with the bonding layer 5, and the isolating layer 4 is connected with the anesthetic layer 7 through adhesives; the bonding layer 5 is distributed on the periphery of the anesthetic layer 7, and the removable protective adhesive layer 6 is attached to the surfaces of the bonding layer 5 and the anesthetic layer 7; the anesthetic layer 7 comprises a plurality of anesthetic units, each anesthetic unit comprises an anesthetic coating film and an anesthetic 8 arranged in the anesthetic coating film, and the anesthetic coating film on the surface, which is in contact with the protective adhesive layer 6, is a water-soluble polymer film 9. The water-soluble polymer film 9 is a hyaluronic acid film and a derivative film thereof. The anesthetic 8 in each anesthetic unit is a gel-like anesthetic 8. The anesthetic unit is circular in shape. The self-heating layer 2 contains a plurality of heating agents 1, and the plurality of heating agents 1 generate heat after chemical reaction and can generate constant temperature of 45-50 ℃. Such as iron powder, active carbon, inorganic salt, water and other mixtures, can generate oxidation exothermic reaction under the action of oxygen in the air.

Example 2

A patch for local anesthesia, which has the same remaining structure and composition as in example 1. The water-soluble polymer film 9 is a proteoglycan film. The anesthetic unit is square in shape.

Example 3

A patch for local anesthesia, which has the same remaining structure and composition as in example 1. The water-soluble polymer film 9 is a hydroxypropyl cellulose film. The anesthetic unit is rectangular in shape.

Example 4

A patch for local anesthesia, which has the same remaining structure and composition as in example 1. The water-soluble polymer film 9 is a polyvinyl pyrrolidone film. The anesthetic unit is elliptical in shape.

The above embodiments are only used for illustrating the present invention, and not for limiting the present invention, and those skilled in the relevant technical field can make various changes and modifications without departing from the spirit and scope of the present invention, so that all equivalent technical solutions also belong to the scope of the present invention, and the protection scope of the present invention should be defined by the claims.

Claims

1. A local anesthetic patch characterized by: the local anesthetic patch sequentially comprises an automatic heating layer, a supporting layer, an isolating layer, an adhesive layer and a protective adhesive layer from top to bottom, wherein the anesthetic layer and the adhesive layer are positioned on the same layer; the spontaneous heating layer is connected with the supporting layer, the supporting layer is connected with the isolating layer, the isolating layer is connected with the bonding layer, and the isolating layer is connected with the anesthetic layer through adhesives; the bonding layer is distributed on the periphery of the anesthetic layer, and removable protective adhesive layers are attached to the surfaces of the bonding layer and the anesthetic layer; the anesthetic layer comprises a plurality of anesthetic units, each anesthetic unit comprises an anesthetic coating film and an anesthetic arranged in the anesthetic coating film, and the anesthetic coating film on the surface, which is in contact with the protective layer, is a water-soluble polymer film.

2. The local anesthetic patch as claimed in claim 1, wherein: the water-soluble polymer film is hyaluronic acid and a derivative film thereof, a collagen film, a proteoglycan film, a hydroxypropyl cellulose film, a carboxymethyl cellulose film, a polyvinyl pyrrolidone film or a polyethylene glycol film.

3. The local anesthetic patch as claimed in claim 1, wherein: the anesthetic in each anesthetic unit is a gel anesthetic.

4. The local anesthetic patch as claimed in claim 1, wherein: the shape of the anesthetic unit is any one of circular, square, rectangular, rhombic, elliptical and semicircular.

5. The local anesthetic patch as claimed in claim 1, wherein: the self-heating layer contains a plurality of heating agents, and the heat of the self-heating layer is generated by chemical reaction among the plurality of heating agents.