Aspirator syringe with blood detector

Patent metadata

Field	Value
Publication number	US-10493204-B2
Application number	US-201615349060-A
Country	US
Kind code	B2
Filing date	Nov 11, 2016
Priority date	Nov 11, 2016
Publication date	Dec 3, 2019
Grant date	Dec 3, 2019

Abstract

An aspirator syringe comprising a blood-detecting spectrometer. The syringe may accommodate a standard drug cartridge and may provide manual or automatic movement of a plunger for aspiration and injection. Indicator lights may signal the presence or absence of blood in an aspirate within a drug cartridge. The syringe may also include a detector to read a color of a band on a standard drug cartridge in order to identify a drug.

First claim

The invention claimed is:

1. An aspirator syringe comprising:
a hollow syringe barrel with a needle mount extending outwards from a first end of the barrel;
a plunger extending from a second end of the barrel and slidably moveable within the barrel, the plunger having a piston-engaging tip extending into the barrel;
a spectrometer attached to a side of the barrel, the spectrometer configured to detect blood in an aspirate;
wherein the spectrometer comprises a photodetector, the photodetector being in direct contact with an interior side of the barrel; and
wherein the aspirator syringe further comprises a first indicator light on an exterior side of the barrel electrically connected to the spectrometer to indicate if blood has been detected during aspiration.

2. The aspirator syringe of claim 1 further comprising:
a thumb rest attached to an end of the plunger distal to the piston-engaging tip; and
a finger grip attached to and in direct contact with an exterior surface of the barrel adjacent to the second end.

3. The aspirator syringe of claim 1 wherein the piston-engaging tip is a harpoon having a pointed shape in the form of a cone, a pyramid, or an arrowhead, and
wherein the pointed shape has a pointed tip at an end distal to the plunger.

4. The aspirator syringe of claim 1 further comprising a battery electrically connected to the spectrometer.

5. The aspirator syringe of claim 1 wherein the needle mount is removably attached to the first end of the barrel by a screw thread connection, and
wherein the screw thread connection is between a screw thread on the needle mount and a complementary thread on an interior of the first end of the barrel.

6. The aspirator syringe of claim 1 further comprising a bushing located within the barrel and attached by a spring to the second end, wherein the bushing is traversed by the plunger and configured to secure a drug cartridge within the barrel.

7. The aspirator syringe of claim 1 wherein the spectrometer comprises an LED light source.

8. The aspirator syringe of claim 1 wherein the spectrometer is a spectrophotometer and detects an absorbance of a wavelength from 400 to 680 nm.

9. The aspirator syringe of claim 1 further comprising a second indicator light on the exterior side of the barrel and electrically connected to the spectrometer to indicate if blood has not been detected during aspiration.

10. A method of administering an anesthetic injection to a tissue of a patient with the aspirator syringe of claim 1 , the method comprising:
inserting an anesthetic syringe needle mounted onto the needle mount of the aspirator syringe into the tissue of the patient, wherein the aspirator syringe is loaded with a drug cartridge comprising an anesthetic drug;
aspirating the aspirate into the drug cartridge;
detecting the presence or absence of blood in the aspirate with the spectrometer; and
injecting the anesthetic drug into the patient when no blood is detected in the aspirate.

Assignees

• Univ Imam Abdulrahman Bin Faisal

Inventors

• Almoumen Saud Abdullah A

Classifications

• A61M2205/6081

  Colour codes · CPC title

• A61M5/3137

  Specially designed finger grip means, e.g. for easy manipulation of the syringe rod · CPC title

• A61M2005/2026

  Semi-automatic, e.g. user activated piston is assisted by additional source of energy · CPC title

• A61M2205/583

  by visual feedback · CPC title

• A61M2205/586

  Ergonomic details therefor, e.g. specific ergonomics for left or right-handed users · CPC title