Needle device for a nerve block
View Patent ↗Provided herein is a needle device for a nerve block, which includes a gripping part having a longitudinal passage through which a liquid fluid flows, said liquid fluid also flowing through the inside of a needle aligned with the longitudinal passage. The device also includes a nerve stimulator through which electricity is transmitted to the needle. The gripping part includes a radial duct that intersects tangentially with the longitudinal passage, the radial duct having two opposite female couplings into either of which the nerve stimulator can be inserted, depending on whether the user is left-handed or right-handed.
1. A needle device for a nerve block, which comprises:
a gripping part that has a longitudinal passage through which a liquid fluid flows, said liquid fluid also flowing through an inside of a needle aligned with said longitudinal passage; and
a nerve stimulator, through which electric current is transmitted to the needle,
wherein the gripping part comprises a radial duct that intersects tangentially with the longitudinal passage, the radial duct having two opposite female couplings into either of which the nerve stimulator can be inserted, depending on whether a user is left-handed or right-handed, and
wherein housed inside an anterior end section of the longitudinal passage of the gripping part is a cylindrical bushing made of a conductive material, said cylindrical bushing being located in an area of confluence in which the longitudinal passage and the radial duct converge, and said cylindrical bushing having an axial hole into which an outer portion of the needle fits.
2. The needle device for a nerve block, according to claim 1 , wherein the nerve stimulator includes a deformable connector with an outer portion that comes into contact with the cylindrical bushing in order to transmit electric current to the needle when said nerve stimulator is inserted into one of the female couplings of the gripping part.
3. The needle device for a nerve block, according to claim 2 , wherein the cylindrical bushing includes a radial nipple with which the outer portion of the deformable connector of the nerve stimulator makes contact.
4. The needle device for a nerve block, according to claim 3 , wherein the cylindrical bushing comprises a first cylindrical body with a greater diameter and a second cylindrical body with a smaller diameter, which integrates the radial nipple.
5. The needle device for a nerve block, according to claim 1 , wherein the radial duct of the gripping part is located in a direction perpendicular to the direction of the longitudinal passage of the gripping part.
6. The needle device for a nerve block, according to claim 1 , wherein the gripping part comprises a revolution geometry with a centered outer section made up of a first grooved structure formed by an alternating succession of longitudinal protrusions and channels.
7. The needle device for a nerve block, according to claim 1 , wherein an anterior end section of the longitudinal passage of the gripping part has a narrowing where a section of the needle is adjusted, which is a continuation of the end portion of said needle embedded and fixed in the axial hole of the cylindrical bushing.
8. The needle device for a nerve block, according to claim 1 , wherein the gripping part comprises a rear portion that has facing protrusions, where, in said rear portion, an outer coupling of a connecting tube through which the liquid fluid flows is coupled.
9. The needle device for a nerve block, according to claim 1 , wherein the nerve stimulator comprises an insertable head that on one end has a male element that by an elastic pull is embedded inside one of the female couplings of the gripping part.
10. The needle device for a nerve block, according to claim 9 , wherein the male element of the nerve stimulator has an annular protrusion that is complemented by an annular groove located inside the female couplings.
11. The needle device for a nerve block, according to claim 9 , wherein the insertable head of the nerve stimulator has a revolution geometry with an outer section made up of a second grooved structure formed by an alternating succession of longitudinal protrusions and channels.